@article{10_4153_CJM_1968_026_5,
     author = {Tamura, Takayuki},
     title = {Maximal or {Greatest} {Homomorphic} {Images} of {Given} {Type}},
     journal = {Canadian journal of mathematics},
     pages = {264--271},
     year = {1968},
     volume = {20},
     number = {1},
     doi = {10.4153/CJM-1968-026-5},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1968-026-5/}
}