@article{10_2298_BMAT0429085C,
     author = {D. Cvetkovi\'c and M. Lepovi\'c},
     title = {Sets of cospectral graphs with least eigenvalue at least -2 and some related results},
     journal = {Bulletin de l'Acad\'emie serbe des sciences. Classe des sciences math\'ematiques et naturelles},
     pages = {85 },
     publisher = {mathdoc},
     volume = {29},
     year = {2004},
     doi = {10.2298/BMAT0429085C},
     zbl = {1077.05059},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.2298/BMAT0429085C/}
}