D. Hilbert and W. Ackermann. Principles of mathematical logic. English translation of III 83(2) by Lewis M. Hammond, George G. Leckie, and F. Steinhardt. Edited and with notes by Robert E. Luce. Chelsea Publishing Company, New York1950, xii + 172 pp.
1951 ◽
Vol 16
(1)
◽
pp. 52-53