%0 Journal Article %A Sumner, David P. %T Minimal line graphs %J Glasgow mathematical journal %D 1976 %P 12-16 %V 17 %N 1 %U http://geodesic.mathdoc.fr/articles/10.1017/S0017089500002652/ %R 10.1017/S0017089500002652 %F 10_1017_S0017089500002652