1. Every planar graph has an acyclic 7-coloring;Albertson;Israel J. Math.,1977
2. On acyclic coloring of planar graphs;Borodin;Discrete Math.,1979
3. Acyclic 3-choosability of planar graphs without cycles of length from 4 to 12;Borodin;Diskretn. Anal. Issled. Oper.,2009
4. Acyclic 4-colorability of planar graphs without 4- and 6-cycles;Borodin;Diskretn. Anal. Issled. Oper.,2009
5. Acyclic 4-colorability of planar graphs without 4- and 5-cycles;Borodin;Diskretn. Anal. Issled. Oper.,2010