Voir la notice de l'article provenant de la source Mathematicac Balkanica website
@article{MABA_2000_14_1-2_a4, author = {R. Romano}, title = {Study of {L(r,} s)-colourings for {Caterpillars} and for {Trees}}, journal = {Mathematica balkanica}, pages = {59}, publisher = {mathdoc}, volume = {14}, number = {1-2}, year = {2000}, url = {http://geodesic.mathdoc.fr/item/MABA_2000_14_1-2_a4/} }
R. Romano. Study of L(r, s)-colourings for Caterpillars and for Trees. Mathematica balkanica, Tome 14 (2000) no. 1-2, p. 59. http://geodesic.mathdoc.fr/item/MABA_2000_14_1-2_a4/