@article{1183739788, author = {Bunder, M. W.}, title = {The Inconsistency of $\mathscr{F}^\ast\_{21}$}, journal = {J. Symbolic Logic}, volume = {41}, number = {1}, year = {1976}, pages = { 467-468}, language = {en}, url = {http://dml.mathdoc.fr/item/1183739788} }
Bunder, M. W. The Inconsistency of $\mathscr{F}^\ast_{21}$. J. Symbolic Logic, Tome 41 (1976) no. 1, pp. 467-468. http://gdmltest.u-ga.fr/item/1183739788/