Proceedings of the fourth Berkeley symposium on mathematical statistics and probability : held at the Statistical laboratory, University of California, June 20-July 30, 1960, with the support of University of California, National Science Foundation, Office of Naval Research, Office of Ordnance Research, Air Force Office of Research, National Institutes of Health : contributions to the theory of statistics / vol. 1. - Neyman, Jerzy (University of California Press, 1961)