@article{1183740060, author = {Hajek, Petr}, title = {Experimental Logics and $\Pi^0\_3$ Theories}, journal = {J. Symbolic Logic}, volume = {42}, number = {1}, year = {1977}, pages = { 515-522}, language = {en}, url = {http://dml.mathdoc.fr/item/1183740060} }
Hajek, Petr. Experimental Logics and $\Pi^0_3$ Theories. J. Symbolic Logic, Tome 42 (1977) no. 1, pp. 515-522. http://gdmltest.u-ga.fr/item/1183740060/