@article{GDZPPN001260820, title = {Solvability and the permutation property in inverse semigroups.}, journal = {Semigroup forum}, volume = {43}, year = {1991}, pages = {113-116}, zbl = {0729.20031}, url = {http://dml.mathdoc.fr/item/GDZPPN001260820} }
Piochi, B. Solvability and the permutation property in inverse semigroups.. Semigroup forum, Tome 43 (1991) pp. 113-116. http://gdmltest.u-ga.fr/item/GDZPPN001260820/