@article{MASLO_1983__33_1_a4,
     author = {\v{S}ir\'a\v{n}, Jozef},
     title = {An enumeration theorem for rooted graphs},
     journal = {Mathematica slovaca},
     pages = {29--34},
     publisher = {mathdoc},
     volume = {33},
     number = {1},
     year = {1983},
     mrnumber = {689274},
     zbl = {0509.05052},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/MASLO_1983__33_1_a4/}
}