@article{1183732207, author = {Svenonius, Lars}, title = {Definability and Simplicity}, journal = {J. Symbolic Logic}, volume = {20}, number = {1}, year = {1955}, pages = { 235-250}, language = {en}, url = {http://dml.mathdoc.fr/item/1183732207} }
Svenonius, Lars. Definability and Simplicity. J. Symbolic Logic, Tome 20 (1955) no. 1, pp. 235-250. http://gdmltest.u-ga.fr/item/1183732207/