@article{GDZPPN002290944,
title = {Functional Completeness in the Small. II. Algebraic Cluster Theorem.},
journal = {Mathematische Annalen},
volume = {146},
year = {1962},
pages = {173-191},
zbl = {0105.01402},
url = {http://dml.mathdoc.fr/item/GDZPPN002290944}
}
FOSTER, A.L. Functional Completeness in the Small. II. Algebraic Cluster Theorem.. Mathematische Annalen, Tome 146 (1962) pp. 173-191. http://gdmltest.u-ga.fr/item/GDZPPN002290944/