A note on the number of functional digraphs.
READ, R.C.
Mathematische Annalen, Tome 142 (1961), p. 109-110 / Harvested from Göttinger Digitalisierungszentrum
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Publié le : 1961-01-01
EUDML-ID : urn:eudml:doc:160854 
@article{GDZPPN002289253,
     title = {A note on the number of functional digraphs.},
     journal = {Mathematische Annalen},
     volume = {142},
     year = {1961},
     pages = {109-110},
     zbl = {0096.38201},
     url = {http://dml.mathdoc.fr/item/GDZPPN002289253}
}

READ, R.C. A note on the number of functional digraphs.. Mathematische Annalen, Tome 142 (1961) pp. 109-110. http://gdmltest.u-ga.fr/item/GDZPPN002289253/