@article{10_4153_CMB_1970_008_2,
     author = {Platt, Craig},
     title = {A {Note} on {Endomorphism} {Semigroups}},
     journal = {Canadian mathematical bulletin},
     pages = {47--48},
     year = {1970},
     volume = {13},
     number = {1},
     doi = {10.4153/CMB-1970-008-2},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1970-008-2/}
}