@article{1183738857,
author = {Seldin, Jonathan P.},
title = {Equality in $\mathscr{F}\_{21}$},
journal = {J. Symbolic Logic},
volume = {38},
number = {1},
year = {1973},
pages = { 571-575},
language = {en},
url = {http://dml.mathdoc.fr/item/1183738857}
}
Seldin, Jonathan P. Equality in $\mathscr{F}_{21}$. J. Symbolic Logic, Tome 38 (1973) no. 1, pp. 571-575. http://gdmltest.u-ga.fr/item/1183738857/