@article{10_4153_CJM_1979_108_0,
     author = {Perkel, Manley},
     title = {Bounding the {Valency} of {Polygonal} {Graphs} {With} {Odd} {Girth}},
     journal = {Canadian journal of mathematics},
     pages = {1307--1321},
     year = {1979},
     volume = {31},
     number = {6},
     doi = {10.4153/CJM-1979-108-0},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1979-108-0/}
}