@article{PIM_1973_N_S_16_30_a5,
     author = {Drago\v{s} M. Cvetkovi\'c},
     title = {Spectrum {Of} {The} {Total} {Graph} {Of} {A} {Graph}},
     journal = {Publications de l'Institut Math\'ematique},
     pages = {49 },
     publisher = {mathdoc},
     volume = {_N_S_16},
     number = {30},
     year = {1973},
     url = {http://geodesic.mathdoc.fr/item/PIM_1973_N_S_16_30_a5/}
}