1. Ban predators from the scientific record
2. What is a predatory journal? A scoping review
3. Directory of Open Access Journals. (2019a). Frequently asked questions: How do we define ‘open access journal’ ‘quality control’ ‘research journal’ and ‘periodical’ . Retrieved from https://doaj.org/faq#definition
4. Directory of Open Access Journals. (2019b). Principles of transparency and best practice in scholarly publishing January 15 2018 . Retrieved from https://doaj.org/bestpractice