Geodesic
On a form of coloring of graph edges into prescribed colors
Diskretnaya Matematika, Tome 9 (1997) no. 4, pp. 92-93 
O. P. Stetsenko. On a form of coloring of graph edges into prescribed colors. Diskretnaya Matematika, Tome 9 (1997) no. 4, pp. 92-93. http://geodesic.mathdoc.fr/item/DM_1997_9_4_a8/
@article{DM_1997_9_4_a8,
     author = {O. P. Stetsenko},
     title = {On a form of coloring of graph edges into prescribed colors},
     journal = {Diskretnaya Matematika},
     pages = {92--93},
     year = {1997},
     volume = {9},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DM_1997_9_4_a8/}
}
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Voir la notice de l'article provenant de la source Math-Net.Ru

We consider assignments of colours from given sets to the edges of a graph such that all edges of one and the same colour form a connected graph. For a forest consisting of trees with even numbers of edges we give a condition sufficient for existence of such a colouring.