Yao, Linru; Yang, Zhongzhi; Cheng, Guisun The entry deterrence caused by product innovation speed. (Chinese. English summary) Zbl 1210.91070 J. Shanghai Jiaotong Univ. (Chin. Ed.) 40, No. 4, 672-676 (2006). MSC: 91B38 Production theory, theory of the firm PDFBibTeX XMLCite \textit{L. Yao} et al., J. Shanghai Jiaotong Univ. (Chin. Ed.) 40, No. 4, 672--676 (2006; Zbl 1210.91070)