@article{SF_1994__49_2_135354,
     author = {A.V. Tishchenko},
     title = {Simplicity of wreath product of semigroups with fixed passive semigroup.},
     journal = {Semigroup forum},
     pages = {275--288},
     publisher = {mathdoc},
     volume = {49},
     number = {2},
     year = {1994},
     zbl = {0813.20076},
     url = {http://geodesic.mathdoc.fr/item/SF_1994__49_2_135354/}
}