Counting occurrences of some subword patterns. Burstein, Alexander; Mansour, Toufik — 2003 Discrete Mathematics and Theoretical Computer Science. DMTCS [electronic only]
Words restricted by patterns with at most 2 distinct letters. Burstein, Alexander; Mansour, Toufik — 2003 The Electronic Journal of Combinatorics [electronic only]
Packing patterns into words. Burstein, Alexander; Hästö, Peter; Mansour, Toufik — 2003 The Electronic Journal of Combinatorics [electronic only]