For a Nonclosing Field, Every Algebraic Variety is a Hypersurface, or All of Space. Theodore S. Motzkin (1970) Aequationes mathematicae
For a Nonclosing Field, Every Algebraic Variety is a Hypersurface, or All of Space. (Short Communication). Theodore S. Motzkin (1970) Aequationes mathematicae