Francine Blanchet-Sadri, Bob Chen, Aleksandar Chakarov. Minimum Number of Holes in Unavoidable Sets of Partial Words of Size Three. In Costas S. Iliopoulos, William F. Smyth, editors, Combinatorial Algorithms - 21st International Workshop, IWOCA 2010, London, UK, July 26-28, 2010, Revised Selected Papers. Volume 6460 of Lecture Notes in Computer Science, pages 43-55, Springer, 2010. [doi]
Abstract is missing.