Topics in P. C.: Rent Seeking
intorduction
here is a nice and simple introductory text writen by professor Tullock who has the most contribution to this field of research.

Classical Articles:
Tullock, G., Welfare costs of tariffs, monopolies and theft. Western Economic Journal. 5: pp. 224-232., 1967

Posner, Richard, The Social Costs of Monopoly and Regulation. The Journal
of Political Economy, Vol. 83, No. 4, 807-828. Aug., 1975

Krueger, Ann O.,The Political Economy of the Rent-Seeking Society. The American
Economic Review, Vol. 64, No. 3, 291-303. Jun., 1974