@article{MASLO_1984_34_1_a1,
author = {H{\'\i}c, Pavol},
title = {On partially directed $P$-graphs},
journal = {Mathematica slovaca},
pages = {25--34},
year = {1984},
volume = {34},
number = {1},
mrnumber = {735935},
zbl = {0608.05037},
language = {en},
url = {http://geodesic.mathdoc.fr/item/MASLO_1984_34_1_a1/}
}
Híc, Pavol. On partially directed $P$-graphs. Mathematica slovaca, Tome 34 (1984) no. 1, pp. 25-34. http://geodesic.mathdoc.fr/item/MASLO_1984_34_1_a1/
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