Obara, Ichiro. "The Full Surplus Extraction Theorem with Hidden Actions" The B.E. Journal of Theoretical Economics, 8.1 (2008): -. Retrieved 19 May. 2013, from doi:10.2202/1935-1704.1399

Obara, I. (2008). The Full Surplus Extraction Theorem with Hidden Actions. The B.E. Journal of Theoretical Economics, 8(1), pp. -. Retrieved 19 May. 2013, from doi:10.2202/1935-1704.1399

Obara, Ichiro. 2008. The Full Surplus Extraction Theorem with Hidden Actions. The B.E. Journal of Theoretical Economics. 8(1): -. Retrieved 19 May. 2013, from doi:10.2202/1935-1704.1399