@article{1093883342, author = {Caicedo, Xavier}, title = {On extensions of $L\_{\omega \omega }(Q\_1)$.}, journal = {Notre Dame J. Formal Logic}, volume = {22}, number = {1}, year = {1981}, pages = { 85-93}, language = {en}, url = {http://dml.mathdoc.fr/item/1093883342} }
Caicedo, Xavier. On extensions of $L_{\omega \omega }(Q_1)$.. Notre Dame J. Formal Logic, Tome 22 (1981) no. 1, pp. 85-93. http://gdmltest.u-ga.fr/item/1093883342/