Robert Ganian, Jan Obdrz'alek. Expanding the Expressive Power of Monadic Second-Order Logic on Restricted Graph Classes. Combinatorial Algorithms - 24th International Workshop, IWOCA 2013, Rouen, France, July 10-12, 2013, Revised Selected Papers, volume 8288 of Lecture Notes in Computer Science, pages 164-177, 2013, Springer.