1. Pattern avoiding Dyck paths;Bernini;Discrete Math. Theor. Comput. Sci. Proc.,2013
2. The Möbius function of subword order;Björner,1990
3. A. Burstein, Enumeration of words with forbidden patterns, Ph.D. Thesis, University of Pennsylvania, 1998.
4. Combinatorics of words;Choffrut,1997
5. Non-contiguous pattern avoidance in binary trees;Dairyko;Electron. J. Combin.,2012