@article{BASS_2007_32_a2,
     author = {Tatjana Aleksi\'c and I. Gutman and M. Petrovi\'c},
     title = {Estrada index of iterated line graphs},
     journal = {Bulletin de l'Acad\'emie serbe des sciences. Classe des sciences math\'ematiques et naturelles},
     pages = {33 },
     publisher = {mathdoc},
     volume = {32},
     year = {2007},
     zbl = {1224.05291},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/BASS_2007_32_a2/}
}