On a theorem in the theory of binary relations
Compositio Mathematica, Volume 8  (1951), p. 250
@article{CM_1951__8__250_0,
author = {Fodor, G.},
title = {On a theorem in the theory of binary relations},
journal = {Compositio Mathematica},
publisher = {Kraus Reprint},
volume = {8},
year = {1951},
pages = {250-250},
zbl = {0042.05301},
mrnumber = {40377},
language = {en},
url = {http://www.numdam.org/item/CM_1951__8__250_0}
}

Fodor, G. On a theorem in the theory of binary relations. Compositio Mathematica, Volume 8 (1951) , p. 250. http://www.numdam.org/item/CM_1951__8__250_0/