@article{1183737752, author = {Owings, James C.}, title = {A Splitting Theorem for Simple $\Pi^1\_1$ Sets}, journal = {J. Symbolic Logic}, volume = {36}, number = {1}, year = {1971}, pages = { 433-438}, language = {en}, url = {http://dml.mathdoc.fr/item/1183737752} }
Owings, James C. A Splitting Theorem for Simple $\Pi^1_1$ Sets. J. Symbolic Logic, Tome 36 (1971) no. 1, pp. 433-438. http://gdmltest.u-ga.fr/item/1183737752/