@article{1183743402, author = {Velleman, Dan}, title = {Partitioning Pairs of Countable Sets of Ordinals}, journal = {J. Symbolic Logic}, volume = {55}, number = {1}, year = {1990}, pages = { 1019-1021}, language = {en}, url = {http://dml.mathdoc.fr/item/1183743402} }
Velleman, Dan. Partitioning Pairs of Countable Sets of Ordinals. J. Symbolic Logic, Tome 55 (1990) no. 1, pp. 1019-1021. http://gdmltest.u-ga.fr/item/1183743402/