Attila Bernáth Satoru Iwata Tamás Király Zoltán Király Zoltán Szigeti Recent results on well-balanced orientations. 663-676 2008 5 Discrete Optimization 4 http://dx.doi.org/10.1016/j.disopt.2008.03.001 db/journals/disopt/disopt5.html#BernathIKKS08