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@article{MAN_1970__189_162083, author = {R.A. KNOEBEL}, title = {Simplicity vis-\`a-vis {Functional} {Completeness.}}, journal = {Mathematische Annalen}, pages = {299--307}, publisher = {mathdoc}, volume = {189}, year = {1970}, zbl = {0194.01302}, url = {http://geodesic.mathdoc.fr/item/MAN_1970__189_162083/} }
R.A. KNOEBEL. Simplicity vis-à-vis Functional Completeness.. Mathematische Annalen, Tome 189 (1970), pp. 299-307. http://geodesic.mathdoc.fr/item/MAN_1970__189_162083/