Grabowski, W. (1973). Extreme points of a convex polytope and extreme rays of a corresponding convex cone. PKiN.
Lua i Stíl Chicago (17ú heag.)Grabowski, Wiesław. Extreme Points of a Convex Polytope and Extreme Rays of a Corresponding Convex Cone. Warszawa: PKiN, 1973.
Lua MLA (8ú heag.)Grabowski, Wiesław. Extreme Points of a Convex Polytope and Extreme Rays of a Corresponding Convex Cone. PKiN, 1973.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.