@article{GDZPPN001263331, title = {On the weak permutation property.}, journal = {Semigroup forum}, volume = {48}, year = {1994}, pages = {253-254}, zbl = {0812.20035}, url = {http://dml.mathdoc.fr/item/GDZPPN001263331} }
Kelarev, A.V. On the weak permutation property.. Semigroup forum, Tome 48 (1994) pp. 253-254. http://gdmltest.u-ga.fr/item/GDZPPN001263331/