@article{1183734744, author = {Martin, Donald A.}, title = {A Theorem on Hyperhypersimple Sets}, journal = {J. Symbolic Logic}, volume = {28}, number = {1}, year = {1963}, pages = { 273-278}, language = {en}, url = {http://dml.mathdoc.fr/item/1183734744} }
Martin, Donald A. A Theorem on Hyperhypersimple Sets. J. Symbolic Logic, Tome 28 (1963) no. 1, pp. 273-278. http://gdmltest.u-ga.fr/item/1183734744/