@article{00969301,
title = {Centrally-symmetric tight surfaces and graph embeddings.},
journal = {Beitr\"age zur Algebra und Geometrie},
volume = {37},
year = {1996},
pages = {347-354},
zbl = {0879.53045},
language = {en},
url = {http://dml.mathdoc.fr/item/00969301}
}
Kühnel, Wolfgang. Centrally-symmetric tight surfaces and graph embeddings.. Beiträge zur Algebra und Geometrie, Tome 37 (1996) pp. 347-354. http://gdmltest.u-ga.fr/item/00969301/