@article{SF_1994__48_3_135315,
     author = {A.V. Kelarev},
     title = {On the weak permutation property.},
     journal = {Semigroup forum},
     pages = {253--254},
     publisher = {mathdoc},
     volume = {48},
     number = {3},
     year = {1994},
     zbl = {0812.20035},
     url = {http://geodesic.mathdoc.fr/item/SF_1994__48_3_135315/}
}