@article{10_4153_CJM_1993_014_0,
     author = {El-Zahar, M. and Sauer, N. W.},
     title = {On the {Divisibility} of {Homogeneous} {Directed} {Graphs}},
     journal = {Canadian journal of mathematics},
     pages = {284--294},
     year = {1993},
     volume = {45},
     number = {2},
     doi = {10.4153/CJM-1993-014-0},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1993-014-0/}
}