@article{10_2298_PIM0693013B,
     author = {Bojana Borovi\'canin and Miroslav Petrovi\'c},
     title = {On the {Index} of {Cactuses} {With} n {Vertices}},
     journal = {Publications de l'Institut Math\'ematique},
     pages = {13 },
     publisher = {mathdoc},
     volume = {_N_S_79},
     number = {93},
     year = {2006},
     doi = {10.2298/PIM0693013B},
     zbl = {1121.05070},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.2298/PIM0693013B/}
}