@article{1093893711, author = {Schumm, G. F.}, title = {On some open questions of B. Soboci\'nski.}, journal = {Notre Dame J. Formal Logic}, volume = {10}, number = {1}, year = {1969}, pages = { 261-262}, language = {en}, url = {http://dml.mathdoc.fr/item/1093893711} }
Schumm, G. F. On some open questions of B. Sobociński.. Notre Dame J. Formal Logic, Tome 10 (1969) no. 1, pp. 261-262. http://gdmltest.u-ga.fr/item/1093893711/