Can the impact of grey literature be assessed? An investigation of UK government publications cited by articles and books. - Matthew Bickley; Kayvan Kousha; Michael Thelwall (Scientometrics, 2020)

A systematic method for identifying references to academic research in grey literature. - Matthew Bickley; Kayvan Kousha; Michael Thelwall (Scientometrics, 2022)

The high scholarly value of grey literature before and during Covid-19. - Kayvan Kousha; Mike Thelwall; Matthew Bickley (Scientometrics, 2022)