In this paper we estimate the crossing number of a flat vertex graph in 3-space in terms of the reduced degree of its Yamada polynomial.
@article{urn:eudml:doc:44078, title = {Yamada polynomial and crossing number of spatial graphs.}, journal = {Revista Matem\'atica de la Universidad Complutense de Madrid}, volume = {7}, year = {1994}, pages = {247-277}, zbl = {0854.57007}, mrnumber = {MR1297514}, language = {en}, url = {http://dml.mathdoc.fr/item/urn:eudml:doc:44078} }
Motohashi, Tomoe; Ohyama, Yoshiyuki; Taniyama, Kouki. Yamada polynomial and crossing number of spatial graphs.. Revista Matemática de la Universidad Complutense de Madrid, Tome 7 (1994) pp. 247-277. http://gdmltest.u-ga.fr/item/urn:eudml:doc:44078/