W. Edwards Deming and Raymond T. Birge

Rev. Mod. Phys. 6, 119 (1934) - Published 1 July, 1934

R. Bowling Barnes and S. Silverman

Rev. Mod. Phys. 6, 162 (1934) - Published 1 July, 1934

F. Zwicky

Rev. Mod. Phys. 6, 193 (1934) - Published 1 July, 1934