Roots of cube polynomials of median graphs.

Bostjan Bresar Sandi Klavzar Riste Skrekovski Roots of cube polynomials of median graphs. 37-50 2006 52 Journal of Graph Theory 1 http://dx.doi.org/10.1002/jgt.20146 db/journals/jgt/jgt52.html#BresarKS06