@article{GDZPPN002442280,
title = {Minimally knotted embeddings of planar graphs.},
journal = {Mathematische Zeitschrift},
volume = {212},
year = {1993},
pages = {653-658},
zbl = {0789.57006},
url = {http://dml.mathdoc.fr/item/GDZPPN002442280}
}
Wu, Ying-Qing. Minimally knotted embeddings of planar graphs.. Mathematische Zeitschrift, Tome 212 (1993) pp. 653-658. http://gdmltest.u-ga.fr/item/GDZPPN002442280/