@article{05540858,
title = {Flexibility of embeddings of bouquets of circles on the projective plane and Klein bottle.},
journal = {The Electronic Journal of Combinatorics [electronic only]},
volume = {14},
year = {2007},
zbl = {1158.05316},
language = {en},
url = {http://dml.mathdoc.fr/item/05540858}
}
Yang, Yan; Liu, Yanpei. Flexibility of embeddings of bouquets of circles on the projective plane and Klein bottle.. The Electronic Journal of Combinatorics [electronic only], Tome 14 (2007) . http://gdmltest.u-ga.fr/item/05540858/