R.Lukatch and J.Plasmans.R&D and Production Behavior of Asymmetric Duopoly Subject to Knowledge Spillovers CESifo Working Paper Series 2000 http://webhost.ua.ac.be/cesit/pdf/ CESIT00_07.

• 张化尧万迪昉袁安府史小坤.；基于创新外溢性与不确定性的企业R&D行为分析[J]