A smaller planar graph without 4-, 5-cycles and intersecting triangles that is not 3-choosable.

Deqiang Wang Yu-Peng Wen Kelun Wang A smaller planar graph without 4-, 5-cycles and intersecting triangles that is not 3-choosable. 87-89 2008 108 Inf. Process. Lett. 3 http://dx.doi.org/10.1016/j.ipl.2008.04.004 db/journals/ipl/ipl108.html#WangWW08