%0 Journal Article %A Robertson, Neil %T Pentagon-Generated Trivalent Graphs with Girth 5 %J Canadian journal of mathematics %D 1971 %P 36-47 %V 23 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1971-004-0/ %R 10.4153/CJM-1971-004-0 %F 10_4153_CJM_1971_004_0