TY - JOUR AU - Gonca Ayik AU - Hayrullah Ayik AU - Yu. Ünlü TI - Presentations and word problem for strong semilattices of semigroups JO - Algebra and discrete mathematics PY - 2005 SP - 28 EP - 35 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ADM_2005_4_a2/ LA - en ID - ADM_2005_4_a2 ER -