TY - JOUR AU - Doron Zeilberger TI - The umbral transfer-matrix method. IV: Counting self-avoiding polygons and walks JO - The electronic journal of combinatorics PY - 2001 VL - 8 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.37236/1572/ DO - 10.37236/1572 ID - 10_37236_1572 ER -