TY - JOUR AU - A.L. FOSTER TI - Functional Completeness in the Small Algebraic Structure Theorems and Identities. JO - Mathematische Annalen PY - 1961 SP - 29 EP - 58 VL - 143 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MAN_1961__143_160850/ ID - MAN_1961__143_160850 ER -