Grabowski, H. G., & Vernon, John, . (1984). A Computer Simulation Model of Pharmaceutical Innovation. In . Lindgren, Bjorn (Ed.), Pharmaceutical Economics (pp. 159–175). Lund, Sweden: Swedish Institute for Health Economics and Liber Forlag.

Grabowski, H. G., and H. G. Vernon, John. “A Computer Simulation Model of Pharmaceutical Innovation.” In Pharmaceutical Economics, edited by H. G. Lindgren, Bjorn, 159–75. Lund, Sweden: Swedish Institute for Health Economics and Liber Forlag, 1984.

Grabowski HG, Vernon, John. A Computer Simulation Model of Pharmaceutical Innovation. In: Lindgren, Bjorn, editor. Pharmaceutical Economics. Lund, Sweden: Swedish Institute for Health Economics and Liber Forlag; 1984. p. 159–75.

Grabowski, H. G., and H. G. Vernon, John. “A Computer Simulation Model of Pharmaceutical Innovation.” Pharmaceutical Economics, edited by H. G. Lindgren, Bjorn, Swedish Institute for Health Economics and Liber Forlag, 1984, pp. 159–75.

Grabowski HG, Vernon, John. A Computer Simulation Model of Pharmaceutical Innovation. In: Lindgren, Bjorn, editor. Pharmaceutical Economics. Lund, Sweden: Swedish Institute for Health Economics and Liber Forlag; 1984. p. 159–175.