A Nullstellensatz and a Positivstellensatz in Semialgebraic Geometry. Gilbert Stengle — 1974 Mathematische Annalen
A Measure for Semialgebraic Sets Related to Boolean Complexity. Gilbert Stengle — 1989 Mathematische Annalen
A nonlinear scattering problem Jack Narayan; Gilbert Stengle — 1986 Annales de l'I.H.P. Analyse non linéaire
The nonreduced order spectrum of a commutative ring. James McEnerney; Gilbert Stengle — 1997 Revista Matemática de la Universidad Complutense de Madrid