An ideal theoretic characterization of finite sets, finite algebras, and σ -algebras of countably generated type Detlef Plachky — 2001 Mathematica Slovaca
A version of the strong law of large numbers universal under mappings Detlef Plachky — 1999 Mathematica Slovaca
Monogenicity of probability measures based on measurable sets invariant under finite groups of transformations Jürgen Hille; Detlef Plachky — 1996 Kybernetika