@article{1183743984, author = {Kummer, Martin}, title = {A Proof of Beigel's Cardinality Conjecture}, journal = {J. Symbolic Logic}, volume = {57}, number = {1}, year = {1992}, pages = { 677-681}, language = {en}, url = {http://dml.mathdoc.fr/item/1183743984} }
Kummer, Martin. A Proof of Beigel's Cardinality Conjecture. J. Symbolic Logic, Tome 57 (1992) no. 1, pp. 677-681. http://gdmltest.u-ga.fr/item/1183743984/