The Number of Functional Digraphs.
HARARY, F.
Mathematische Annalen, Tome 137 (1959), p. 203-210 / Harvested from Göttinger Digitalisierungszentrum
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Publié le : 1959-01-01
EUDML-ID : urn:eudml:doc:160709 
@article{GDZPPN002287609,
     title = {The Number of Functional Digraphs.},
     journal = {Mathematische Annalen},
     volume = {137},
     year = {1959},
     pages = {203-210},
     zbl = {0087.38703},
     url = {http://dml.mathdoc.fr/item/GDZPPN002287609}
}

HARARY, F. The Number of Functional Digraphs.. Mathematische Annalen, Tome 137 (1959) pp. 203-210. http://gdmltest.u-ga.fr/item/GDZPPN002287609/