@article{1183731370, author = {Hasenjaeger, G.}, title = {Uber $\omega$-Unvollstandigkeit in der Peano-Arithmetik}, journal = {J. Symbolic Logic}, volume = {17}, number = {1}, year = {1952}, pages = { 81-97}, language = {de}, url = {http://dml.mathdoc.fr/item/1183731370} }
Hasenjaeger, G. Uber $\omega$-Unvollstandigkeit in der Peano-Arithmetik. J. Symbolic Logic, Tome 17 (1952) no. 1, pp. 81-97. http://gdmltest.u-ga.fr/item/1183731370/