@article{DMGT_2019_39_2_a8,
     author = {Pillone, D.},
     title = {Arankings of {Trees}},
     journal = {Discussiones Mathematicae. Graph Theory},
     pages = {415--437},
     publisher = {mathdoc},
     volume = {39},
     number = {2},
     year = {2019},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGT_2019_39_2_a8/}
}