24644 Yu-Hin Au/Aaron Robertson/Jeffrey Shallit: Van der Waerden's theorem
and avoidability in words. Internet 2013, 15p.

11576 Dwight Bean/Andrzej Ehrenfeucht/George McNulty: Avoidable patterns
in strings of symbols. Pacific J. Math. 85 (1979), 261-294.

11575 T. Brown: Is there a sequence on four symbols in which no two
adjacent segments are permutations of one another?
Am. Math. Monthly ... (1971), 886-888.

11605 Julien Cassaigne: Unavoidable binary patterns.
Internet ca. 1994, 14p.

14039 Julien Cassaigne: Counting overlap-free binary words.
Internet ca. 1995, 9p.

11602 Christian Choffrut/Juhani Karhuma''ki: Combinatorics of words.
Turku Centre CS TR 1996/77, 126p.

11594 James Currie: An introduction to words avoiding patterns.
Internet 1997, 3p.

11600 James Currie: Words avoiding patterns - open problems.
Internet 1997, 8p.

11577 James Currie: Open problems in pattern avoidance.
Am. Math. Monthly 100 (1993), 790-793.

14424 Guoniu Han/Dominique Perrin: Ensembles ine'vitables.
Internet 2001, 11p.

24613 Veikko Keränen: Combinatorics on words. Suppression of unfavorable
factors in pattern avoidance. Mathematica J. 11/3 (2009), 358-409.

24645 Mark Sapir: Combinatorial algebra - syntax and semantics.
Book draft, Internet ca. 2008, 340p.

Stefano Varricchio: Factorizations of free monoids and unavoidable
regularities. Theor. Comp. Sci. 73 (1990), 81-89.