@article{MAN_1972__196_162240,
     author = {Takashi Hamada and Toshio Nonaka and Izumi Yoshimura},
     title = {On the {Connectivity} of {Total} {Graphs.}},
     journal = {Mathematische Annalen},
     pages = {30--38},
     publisher = {mathdoc},
     volume = {196},
     year = {1972},
     zbl = {0215.33802},
     url = {http://geodesic.mathdoc.fr/item/MAN_1972__196_162240/}
}