@article{1183739957, author = {Landraitis, Charles K.}, title = {Definability in Well Quasi-Ordered Sets of Structures}, journal = {J. Symbolic Logic}, volume = {42}, number = {1}, year = {1977}, pages = { 289-291}, language = {en}, url = {http://dml.mathdoc.fr/item/1183739957} }
Landraitis, Charles K. Definability in Well Quasi-Ordered Sets of Structures. J. Symbolic Logic, Tome 42 (1977) no. 1, pp. 289-291. http://gdmltest.u-ga.fr/item/1183739957/