Web Search Engines versus Bibliographic Databases

Please see:

Jessica Bates, Paul  Best, Janice  McQuilkin, et. al., “Will Web Search Engines Replace Bibliographic Databases in the Systematic Identification of Research?,”  43(1) Journal of Academic Librarianship 43(1)(January 2017): 8-17

From the abstract:

The availability of web search engines offers opportunities in addition to those provided by bibliographic databases for identifying academic literature, but their usefulness for retrieving research is uncertain. A rigorous literature search was undertaken to investigate whether web search engines might replace bibliographic databases, using empirical research in health and social care as a case study….