@article{1183386505,
author = {Kalmar, Laszlo},
title = {On the Reduction of the Decision Problem. First Paper. Ackermann Prefix, A Single Binary Predicate},
journal = {J. Symbolic Logic},
volume = {4},
number = {1},
year = {1939},
pages = { 1-9},
language = {en},
url = {http://dml.mathdoc.fr/item/1183386505}
}
Kalmar, Laszlo. On the Reduction of the Decision Problem. First Paper. Ackermann Prefix, A Single Binary Predicate. J. Symbolic Logic, Tome 4 (1939) no. 1, pp. 1-9. http://gdmltest.u-ga.fr/item/1183386505/