Key points are not available for this paper at this time.
James A. Brander, Barbara J. Spencer, Tariffs and the Extraction of Foreign Monopoly Rents under Potential Entry, The Canadian Journal of Economics / Revue canadienne d'Economique, Vol. 14, No. 3 (Aug., 1981), pp. 371-389
Brander et al. (Sat,) studied this question.