@article{1093956247,
author = {Angelelli, Ignacio},
title = {On identity and interchangeability in Leibnitz and Frege.},
journal = {Notre Dame J. Formal Logic},
volume = {8},
number = {3},
year = {1967},
pages = { 94-100},
language = {en},
url = {http://dml.mathdoc.fr/item/1093956247}
}
Angelelli, Ignacio. On identity and interchangeability in Leibnitz and Frege.. Notre Dame J. Formal Logic, Tome 8 (1967) no. 3, pp. 94-100. http://gdmltest.u-ga.fr/item/1093956247/