Robert Cori, Antonio Machi, Jean-Guy Penaud, Bernard Vauquelin. On the Automorphism Group of a Planar Hypermap. Eur. J. Comb., 2(4):331-334, 1981. [doi]
@article{CoriMPV81,
title = {On the Automorphism Group of a Planar Hypermap},
author = {Robert Cori and Antonio Machi and Jean-Guy Penaud and Bernard Vauquelin},
year = {1981},
doi = {10.1016/S0195-6698(81)80039-X},
url = {http://dx.doi.org/10.1016/S0195-6698(81)80039-X},
researchr = {https://researchr.org/publication/CoriMPV81},
cites = {0},
citedby = {0},
journal = {Eur. J. Comb.},
volume = {2},
number = {4},
pages = {331-334},
}