Herrmann Christian; Niemann Niklas: Representations of ∗-regular rings and their ortholattices of projections. In: Acta scientiarum mathematicarum 86. pp. 105-115. (2020)
Herrmann Christian; Semenova Marina: Linear representations of regular rings and complemented modular lattices with involution. In: Acta scientiarum mathematicarum, (82) 3-4. pp. 395-442. (2016)
Herrmann Christian: Frames of permuting equivalences. In: Acta scientiarum mathematicarum, (51) 1-2. pp. 93-101. (1987)
Herrmann Christian: A parameter for subdirectly irreducible modular lattices with four generators. In: Acta scientiarum mathematicarum, (43) 1-2. pp. 169-179. (1981)
Herrmann Christian: Affine algebras in congruence modular varieties. In: Acta scientiarum mathematicarum, (41) 1-2. pp. 119-125. (1979)