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Just how difficult can it be counting up R&D funding for emerging technologies (and is tech mining with proxy measures going to be any better)?
Hopkins, Michael M., (2013)
Big Pharma, little science? : a bibliometric perspective on Big Pharma's R&D decline
Rafols, Ismael, (2014)
Big Pharma, Little Science? A Bibliometric Perspective on Big Pharma’s R&D Decline
Rafols, Ismael, (2015)