Denseness results in the theory of algebraic fields. - Anscombe, Sylvy; Dittmann, Philip; Fehm, Arno (Ann. Pure Appl. Log., 2021)

Nondefinability of Rings of Integers in Most Algebraic Fields. - Dittmann, Philip; Fehm, Arno (Notre Dame J. Formal Log., 2021)

Existential ∅-Definability of Henselian Valuation Rings. - Fehm, Arno (J. Symb. Log., 2015)

On the quantifier complexity of definable canonical Henselian valuations. - Fehm, Arno; Jahnke, Franziska (Math. Log. Q., 2015)

Elementary geometric local-global principles for fields. - Fehm, Arno (Ann. Pure Appl. Log., 2013)

A note on defining transcendentals in function fields. - Fehm, Arno; Geyer, Wulf-Dieter (J. Symb. Log., 2009)