@article{05875509, title = {A certain reducibility on admissible sets.}, journal = {Sibirskij Matematicheskij Zhurnal}, volume = {50}, year = {2009}, pages = {414-428}, zbl = {1224.03022}, language = {en}, url = {http://dml.mathdoc.fr/item/05875509} }
Puzarenko, V.G. A certain reducibility on admissible sets.. Sibirskij Matematicheskij Zhurnal, Tome 50 (2009) pp. 414-428. http://gdmltest.u-ga.fr/item/05875509/