@article{1183737032, author = {Thomason, S. K.}, title = {A Theorem on Initial Segments of Degrees}, journal = {J. Symbolic Logic}, volume = {35}, number = {1}, year = {1970}, pages = { 41-45}, language = {en}, url = {http://dml.mathdoc.fr/item/1183737032} }
Thomason, S. K. A Theorem on Initial Segments of Degrees. J. Symbolic Logic, Tome 35 (1970) no. 1, pp. 41-45. http://gdmltest.u-ga.fr/item/1183737032/