@article{1183730565, author = {Fitch, Frederic B.}, title = {The Heine-Borel Theorem in Extended Basic Logic}, journal = {J. Symbolic Logic}, volume = {14}, number = {1}, year = {1949}, pages = { 9-15}, language = {en}, url = {http://dml.mathdoc.fr/item/1183730565} }
Fitch, Frederic B. The Heine-Borel Theorem in Extended Basic Logic. J. Symbolic Logic, Tome 14 (1949) no. 1, pp. 9-15. http://gdmltest.u-ga.fr/item/1183730565/