篇号： 1
题名：Do markets differ much?
作者：Schmalansee, R.

期刊全称或缩写：American Economic Review, 78, pp. 246-251,1985
篇号： 2
题名：Tobin's q and the importance of focus in firm
performance
作者：Wernerfelt, B. and C. Montgomery

期刊全称或缩写： American Economic Review, 78, pp. 246-251,1988
篇号： 3
题名：Determinants of firm performance: The relative importance of economic and organizational factors
作者：Hansen, G. and B. Wernerfelt

期刊全称或缩写：Strategic Management Journal, 10(5), pp. 399-511.1989