Wang, Wei‐Kang; Lu, Wen‐Min; Kweh, Qian Long; Truong, Hoang Tu Nhi
(John Wiley and Sons Ltd, 2020)
This paper investigates how patents and research and development (R&D) spikes affect the corporate performance of 863 firm-year observations of U.S. biopharmaceutical companies. First, a dynamic data envelopment analysis ...