@article{1183736513, author = {Lambert, W. M.}, title = {A Notion of Effectiveness in Arbitrary Structures}, journal = {J. Symbolic Logic}, volume = {33}, number = {1}, year = {1968}, pages = { 577-602}, language = {en}, url = {http://dml.mathdoc.fr/item/1183736513} }
Lambert, W. M. A Notion of Effectiveness in Arbitrary Structures. J. Symbolic Logic, Tome 33 (1968) no. 1, pp. 577-602. http://gdmltest.u-ga.fr/item/1183736513/