
Good sources are relevant to your research question, written by qualified authors, transparent about their methods and, ideally, peer-reviewed. Finding them is one of the foundations for writing an excellent academic paper. With Mimir Mentor, you can search and manage your sources and see quality indicators for each one.

What makes a source good?
How do you check whether a source is good? The CRAAP test
For any source, including books, reports and websites, the CRAAP test gives you five quick questions. It was developed at the Meriam Library of California State University, Chico.
| Criterion | Question to ask |
|---|---|
| Currency | When was it published, and is that recent enough for your topic? |
| Relevance | Does it actually address your research question? |
| Authority | Who wrote or published it, and what qualifies them? |
| Accuracy | Are the claims supported by evidence and references, and was it reviewed? |
| Purpose | Was it written to inform, or to sell, persuade or entertain? |
Be wary of journals that promise very fast publication for a fee with little or no peer review (so-called predatory journals). For open-access titles, a listing in the Directory of Open Access Journals (DOAJ) is a useful first check.
The quality and reliability of sources are crucial for any academic research. Mimir Mentor supports you in identifying top-tier journals and influential authors through indicators such as SJR and H-Index. This allows you to make targeted selections of essential and frequently cited works.
There is a danger of losing track of your sources in the sheer volume of available documents and articles, and a source you can no longer trace is quickly a source you forget to cite.
Interpreting Journal Citation Impact with SJR
The Scimago Journal Rank (SJR) is an indicator of the scientific influence of a journal and considers the citation frequency of its articles as well as the reputation of the citing journals. The SJR works similarly to an echo in the academic community:
- SJR over 3:
- Significance: A high numerical value; interpret it within the subject area and year.
- Example: A top-rated journal in physics might exceed an SJR of 3, indicating intensive and widespread citation of its articles.
- SJR from 1 to 3:
- Significance: Strong presence and regular citation in research.
- Example: A recognized journal in psychology with an SJR of about 2 shows its solid position in its field.
- SJR under 1:
- Significance: A lower numerical value, not evidence of poor research quality.
- Example: A specialist journal for regional studies may have an SJR of 0.5 simply because few journals cite work in such a small field.
SJR measures citation impact. Compare journals within the same field and year, and assess each article’s methods, evidence and relevance separately.
In your literature list, Mimir shows a quality rating for each source, so you can see at a glance which sources need a closer look.
Evaluating Authors with H-Index
The H-Index is an important indicator of a researcher’s scientific productivity and influence. It measures how often their publications are cited by other scientists. For example:
- A low H-Index may indicate that a researcher is at the beginning of their career or works in a very specialized field where citations are less frequent. This is not necessarily bad, but it shows less influence compared to higher H-Indexes.
- An H-Index of 10 indicates that a researcher has published at least 10 works that have each been cited at least 10 times. It is a citation count threshold, not a quality rating.
- An H-Index of 20 or more means at least 20 publications have each received at least 20 citations. Its interpretation depends on the field, career length and database.
- An H-Index of 60 means at least 60 publications have each received at least 60 citations. It cannot establish the reliability of the particular source you are reading.
When searching the literature, pay attention to authors with a good H-Index. This can be an indication of quality and relevance, but be aware that the H-Index is influenced by career length and field of study. It’s important to consider the context and not solely rely on the H-Index.

Screenshot: the literature search in Mimir Mentor
Summary of Good vs. Bad Sources
| Criterion | Good Source | Bad Source |
|---|---|---|
| Author (H-Index) | A citation indicator to interpret in context; assess the paper itself. | A low value may reflect career stage or field, not poor source quality. |
| SJR (Journal Ranking) | Compare citation impact within the same subject area and year. | A low score alone is not a reason to reject a relevant, rigorous source. |
| Publication Medium | Peer-Review Journal: Sign of quality and credibility. | Website or Blog: Often not peer-reviewed and less reliable. |
| Currency of the Source | Current: Reflects the present state of research. | Outdated: Research findings might be outdated. |
Use the table as a set of prompts, not a quality scorecard. Citation metrics describe influence, while peer review provides scrutiny. Neither guarantees that an individual paper is reliable; examine its methods, evidence, limitations and relevance.
However, there are exceptions: A young researcher could do groundbreaking work despite a low H-Index, and open-access journals can publish important research despite a lower SJR. Moreover, some websites, like official organizations or government pages, are trustworthy despite lacking peer review. It’s important to consider the context and remain critical.
How do you find good sources faster?
Mimir Mentor provides access to an extensive database of over 200 million academic publications. With advanced filter options, you can refine your search for high-quality sources:
- At least 50 citations: Choose publications that are considered influential due to their frequent citation.
- Only Quality Journals: Limit the search to journals known for their quality and reliability.
- Only Quality Authors: Filter results to only show works by recognized authors with significant contributions to their field.

Screenshot: the literature search in Mimir Mentor
Use Mimir Mentor’s search filters to limit your search to the newest and most relevant materials.
Description of all available filters:
| Mimir Search filter options | Description |
|---|---|
| No Filter | Displays all search results without restrictions. |
| At least 50 Citations | Limits the search to sources with at least 50 citations. |
| Only Quality Journals | Filters the search to only show sources from journals with high SJR values. |
| Only Quality Authors | Limits results to publications by authors with high H-Index. |
| Exclude Cited Journals | Excludes already cited journals from your current literature selection. |
| Exclude Cited Authors | Excludes already cited authors from your current literature selection. |
Critical Evaluation of Sources
Evaluating the quality and relevance of sources is a critical step in the research process, because in the end borrowed claims need citations and your own conclusions need evidence.
Use Mimir Mentor’s built-in automatic checklist to check your literature for quality and completeness.
Enhancing the Quality of Your Research Literature with Mimir Mentor
A thorough literature search is central to academic work. Mimir Mentor helps you optimize this crucial aspect of your research:

Screenshot: literature management in Mimir Mentor
- Sources from Quality Journals: Choose at least three sources from journals with a high SJR value.
- Sources from Quality Authors: Include works by at least three authors with a high h-index.
- Sources with Many Citations: Ensure that at least two of your sources have been widely cited, an indicator of their influence and relevance.
These checks help you spot gaps in your literature base early. They do not replace your own judgement of each source, and you still need to cite these sources correctly in your text, for example in the APA citation style.
Optimize Your Literature Base with Mimir Mentor
The beginning of a research project can be daunting. Mimir Mentor’s completeness checklist gives you concrete targets for a solid literature base:

Screenshot: literature management in Mimir Mentor
- Expand Your Sources: Aim to have at least 10 different sources in your collection. A wide selection allows for a comprehensive understanding of your topic.
- Diversify Your Journals: Collecting information from at least three different journals ensures exposure to a range of perspectives and methodologies.
- Diversity of Authors: Include works from at least five different authors to avoid research bias and increase the credibility of your literature review.
- International Perspectives: Including relevant international studies can broaden your perspective, but remember that translating a foreign-language passage does not turn it into your own text.
- Stay Current: Ensure your literature includes at least three current publications to keep your research up-to-date and relevant.
By following these steps, you are well on your way to forming a robust foundation for your thesis or research project with Mimir Mentor, from which you can export your bibliography to Microsoft Word whenever you need it.
Conclusion
Good sources are relevant to your question, transparent about their methods and published where experts could scrutinise them. Mimir Mentor supports your academic work by helping you find such sources, showing quality indicators at a glance and flagging gaps in your literature, while the final judgement on each source stays with you.
Use Mimir Mentor to carry out a targeted literature search and quickly assess the quality of your sources.
Mimir Mentor is GDPR-compliant, with servers in the European Union. Your document is deleted after 30 days at the latest and is never added to a public database. More than 70,000 students already use the platform.
FAQs
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How can Mimir Mentor help in assessing the quality of sources?
Mimir Mentor shows indicators such as journal SJR, author h-index and citation counts, and its literature checklist flags gaps in quality and completeness. Judging the paper itself remains your job.
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How many publications can I search with Mimir Mentor?
Mimir Mentor’s search covers over 200 million academic publications. Very recent papers may take some time to appear in any search index, so for the latest research also check the journals and databases of your field.
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How do Mimir Mentor’s citation tools work?
You save sources in your literature list, insert citations in the style you choose and generate the bibliography from the same list. You can also export your references as BibTeX, Word XML or EndNote XML.
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Is Wikipedia a good source for academic work?
Wikipedia is a useful starting point for an overview, but it is not usually cited as evidence in academic work. Use it to find key terms and follow its references to the original sources.
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