關於「Paper search」標籤，搜尋引擎有相關的訊息討論：

Google Scholarscholar.google.comTrials Journal - BioMed Centraltrialsjournal.biomedcentral.com3 ways to find review papers, systematic reviews, meta-analysis, and ...library.smu.edu.sg › topics-insights › 3-ways-find-review-...Googlewww.google.com.hkLibrary - MyGlasgow - Univer