Equitable list coloring of planar graphs without 4- and 6-cycles.

Qiong Li Yuehua Bu Equitable list coloring of planar graphs without 4- and 6-cycles. 280-287 2009 309 Discrete Mathematics 1 http://dx.doi.org/10.1016/j.disc.2007.12.070 db/journals/dm/dm309.html#LiB09