@article{01604423, title = {Posner's second theorem and an annihilator condition.}, journal = {Mathematica Pannonica}, volume = {12}, year = {2001}, pages = {69-81}, zbl = {0973.16019}, language = {en}, url = {http://dml.mathdoc.fr/item/01604423} }
De Filippis, V.; Di Vincenzo, O.M. Posner's second theorem and an annihilator condition.. Mathematica Pannonica, Tome 12 (2001) pp. 69-81. http://gdmltest.u-ga.fr/item/01604423/