Compact Disconnected Planes, Inverse Limits and Homomorphisms. Theo Grundhöfer — 1988 Monatshefte für Mathematik
Non-Associative Division Algebras Admitting Many Derivations. Theo Grundhöfer — 1990 Forum mathematicum
Sharply Transitive Linear Groups and Nearfields over p-adic Fields. Theo Grundhöfer — 1989 Forum mathematicum
Automorphisms of Verardi groups: small upper triangular matrices over rings. Grundhöfer, Theo; Stroppel, Markus — 2008 Beiträge zur Algebra und Geometrie
Sharply 2-transitive sets of permutations and groups of affine projectivities. Grundhöfer, Theo; Müller, Peter — 2009 Beiträge zur Algebra und Geometrie