TY - JOUR AU - Vladimir Volenec TI - Laterally commutative heaps and TST-spaces. JO - Stochastica PY - 1987 SP - 229 VL - 11 IS - 2-3 PB - mathdoc UR - https://geodesic-test.mathdoc.fr/item/STO_1987__11_2-3_38989/ LA - en ID - STO_1987__11_2-3_38989 ER -