@article{PIM_2003_N_S_73_87_a2,
     author = {Drago\v{s} Cvetkovi\'c and Dragan Stevanovi\'c},
     title = {Graphs with {Least} {Eigenvalue} at {Least} -sqrt(3)},
     journal = {Publications de l'Institut Math\'ematique},
     pages = {39 },
     publisher = {mathdoc},
     volume = {_N_S_73},
     number = {87},
     year = {2003},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PIM_2003_N_S_73_87_a2/}
}