Kristiansen, Eirik Gaard R&D in the presence of network externalities: timing and compatibility - Norwegian School of Economics & Business Administration 1996 - 35 See NSE 330 TVE (Includes Acc. Nos. 32950, 32951, 32952, 32953 & 32954) ISBN: 0804-6824 Subjects--Topical Terms: ECONOMICS