@article{10_4153_CJM_1969_055_2,
     author = {Beasley, Leroy B.},
     title = {Maximal {Groups} on {Which} the {Permanent} is {Multiplicative}},
     journal = {Canadian journal of mathematics},
     pages = {495--497},
     year = {1969},
     volume = {21},
     number = {1},
     doi = {10.4153/CJM-1969-055-2},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1969-055-2/}
}