Gray Literature Searching Options: Million Short and Carrot2 Search Engines
David W. Petersen · Journal of Electronic Resources in Medical Libraries · 2021
Librarians searching for gray literature often turn to Google®; however, other options exist that complement Google® searches. Two search engines, Million Short and Carrot2 Search, offer alternative places to search and locate gray literature. This review examines the search engines’ features, returned results, and possibilities for the future.