@article{GDZPPN00230578X, title = {On the t-closure Condition of Martin.}, journal = {Mathematische Annalen}, volume = {193}, year = {1971}, pages = {143-148}, zbl = {0216.28703}, url = {http://dml.mathdoc.fr/item/GDZPPN00230578X} }
Muzio, J.C. On the t-closure Condition of Martin.. Mathematische Annalen, Tome 193 (1971) pp. 143-148. http://gdmltest.u-ga.fr/item/GDZPPN00230578X/