24690 Jean Berstel/Aldo de Luca: Sturmian words, Lyndon words and trees.
Theor. Comp. Sci. 178 (1997), 171-203.

15007 Maxime Crochemore/Renaud Verin: Direct construction of
compact directed acyclic word graphs. Internet ca. 1997, 14p.

15008 Maxime Crochemore/Renaud Verin: On compact directed acyclic
word graphs. Internet ca. 1997, 20p.

Raffaele Giancarlo: A generalization of the suffix tree to matrices.
SIAM J. Computing ... (1995), ...