@article{PIM_1989_N_S_45_59_a1,
     author = {Aleksandar Torga\v{s}ev},
     title = {Maximal {Canonical} {Graphs} with {Three} {Negative} {Eigenvalues}},
     journal = {Publications de l'Institut Math\'ematique},
     pages = {7 },
     publisher = {mathdoc},
     volume = {_N_S_45},
     number = {59},
     year = {1989},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PIM_1989_N_S_45_59_a1/}
}