Gray, Wesley R. (drexel University's Lebow College Of Business; University Of Chicago Booth School Of Business; The Wharton School, Vogel, Jack R. (drexel University's Lebow College Of Business; University Of Scranton) (2) Houweling, Jos (1) Ridley, Charles (1) Mansius, Reinhard (1) Heier, Andreas, Hiller, Thomas, Zink, Markus H. (1)