@article{paperid:1061792, author = {Dadkhah, Mehdi and Mehraeen, Mohammad and Glenn Borchardt}, title = {Questionable papers in citation databases as an issue for literature review}, journal = {Journal of Cell Communication and Signaling}, year = {2017}, volume = {11}, number = {2}, month = {May}, issn = {1873-9601}, pages = {181--185}, numpages = {4}, keywords = {Predatory journals; Hijacked journals Citation; databases Questionable; papers Academic; ethics Literature review}, }