Key points are not available for this paper at this time.
Yutaka Horiba, Rickey C. Kirkpatrick, Factor Endowments, Factor Proportions, and the Allocative Efficiency of U.S. Interregional Trade, The Review of Economics and Statistics, Vol. 63, No. 2 (May, 1981), pp. 178-187
Horiba et al. (Fri,) studied this question.