A Note on Extensions: Admissible Rules via Semantics. - Jeroen P. Goudsmit (LFCS, 2013)

A Syntactic Characterization of the Gabbay-de Jongh Logics. - Jeroen P. Goudsmit (TACL, 2013)

Admissibility and refutation: some characterisations of intermediate logics. - Jeroen P. Goudsmit (Arch. Math. Log., 2014)

On unification and admissible rules in Gabbay-de Jongh logics. - Jeroen P. Goudsmit; Rosalie Iemhoff (Ann. Pure Appl. Log., 2014)

Finite Frames Fail: How Infinity Works Its Way into the Semantics of Admissibility. - Jeroen P. Goudsmit (Stud Logica, 2016)

The Admissible Rules of BD2 and GSc. - Jeroen P. Goudsmit (Notre Dame J. Formal Log., 2018)

Decidability of admissibility: on a Problem by Friedman and its solution by Rybakov. - Jeroen P. Goudsmit (Bull. Symb. Log., 2021)