Model theoretic methods in the theory of topological fields. Alexander Prestel, Martin Ziegler (1978) Journal für die reine und angewandte Mathematik
Model theory of fields: An application to positive semidefinite polynomials Alexander Prestel (1984) Mémoires de la Société Mathématique de France
Monomorphisms of inductive number systems Alling, Norman L., Swartz, Timothy A. (1990) Portugaliae mathematica