TY - JOUR AU - Drensky, Vesselin AU - Hammoudi, Lakhdar TI - Combinatorics of Words and Semigroup Algebras Which Are Sums of Locally Nilpotent Subalgebras JO - Canadian mathematical bulletin PY - 2004 SP - 343 EP - 353 VL - 47 IS - 3 UR - http://geodesic.mathdoc.fr/articles/10.4153/CMB-2004-033-2/ DO - 10.4153/CMB-2004-033-2 ID - 10_4153_CMB_2004_033_2 ER -