@article{10_1017_S0017089500002652,
     author = {Sumner, David P.},
     title = {Minimal line graphs},
     journal = {Glasgow mathematical journal},
     pages = {12--16},
     year = {1976},
     volume = {17},
     number = {1},
     doi = {10.1017/S0017089500002652},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089500002652/}
}