@article{MAN_1961__143_160850,
     author = {A.L. FOSTER},
     title = {Functional {Completeness} in the {Small} {Algebraic} {Structure} {Theorems} and {Identities.}},
     journal = {Mathematische Annalen},
     pages = {29--58},
     publisher = {mathdoc},
     volume = {143},
     year = {1961},
     zbl = {0095.02201},
     url = {http://geodesic.mathdoc.fr/item/MAN_1961__143_160850/}
}