A generalization of the pentomino exclusion problem: Dislocation of graphs.

Sylvain Gravier Julien Moncel Charles Payan A generalization of the pentomino exclusion problem: Dislocation of graphs. 435-444 2007 307 Discrete Mathematics 3-5 http://dx.doi.org/10.1016/j.disc.2005.09.036 db/journals/dm/dm307.html#GravierMP07