Tsang, Seng-Su; Chen, Yi-Fen; Lu, Yung-Hsiang; Chiu, … - In: The Service Industries Journal 34 (2014) 2, pp. 162-174
Few studies address the presence of negative data and undesirable outputs in productivity assessment. This study proposes a range-adjusted measure model that uses a non-radial Malmquist productivity index to estimate dynamic productivity in the presence of negative data and undesirable outputs....