@article{10_1017_S0017089507003916,
     author = {KANTOROVITZ, SHMUEL},
     title = {GENERATORS {OF} {REGULAR} {SEMIGROUPS}},
     journal = {Glasgow mathematical journal},
     pages = {47--53},
     year = {2008},
     volume = {50},
     number = {1},
     doi = {10.1017/S0017089507003916},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089507003916/}
}