@article{1183740247, author = {Wheeler, William H.}, title = {A Characterization of Companionable, Universal Theories}, journal = {J. Symbolic Logic}, volume = {43}, number = {1}, year = {1978}, pages = { 402-429}, language = {en}, url = {http://dml.mathdoc.fr/item/1183740247} }
Wheeler, William H. A Characterization of Companionable, Universal Theories. J. Symbolic Logic, Tome 43 (1978) no. 1, pp. 402-429. http://gdmltest.u-ga.fr/item/1183740247/