Grabowski, H. G., & Vernon, J. (1984). A Computer Simulation Model of Pharmaceutical Innovation. In B. Lindgren (Ed.), Pharmaceutical Economics: Papers Presented at the 6. Arne Ryde Symposium, Helsingborg, Sweden 1982 (pp. 159–175). Malmö, Sweden: Swedish Institute for Health Economics and Liber Forlag.

Grabowski, H. G., and John Vernon. “A Computer Simulation Model of Pharmaceutical Innovation.” In Pharmaceutical Economics: Papers Presented at the 6. Arne Ryde Symposium, Helsingborg, Sweden 1982, edited by Björn Lindgren, 159–75. Malmö, Sweden: Swedish Institute for Health Economics and Liber Forlag, 1984.

Grabowski HG, Vernon J. A Computer Simulation Model of Pharmaceutical Innovation. In: Lindgren B, editor. Pharmaceutical Economics: Papers Presented at the 6 Arne Ryde Symposium, Helsingborg, Sweden 1982. Malmö, Sweden: Swedish Institute for Health Economics and Liber Forlag; 1984. p. 159–75.

Grabowski, H. G., and John Vernon. “A Computer Simulation Model of Pharmaceutical Innovation.” Pharmaceutical Economics: Papers Presented at the 6. Arne Ryde Symposium, Helsingborg, Sweden 1982, edited by Björn Lindgren, Swedish Institute for Health Economics and Liber Forlag, 1984, pp. 159–75.

Grabowski HG, Vernon J. A Computer Simulation Model of Pharmaceutical Innovation. In: Lindgren B, editor. Pharmaceutical Economics: Papers Presented at the 6 Arne Ryde Symposium, Helsingborg, Sweden 1982. Malmö, Sweden: Swedish Institute for Health Economics and Liber Forlag; 1984. p. 159–175.