1. Physical justification for using the tensor product to describe two quantum systems as one joint system;Aerts;Helvetica Physica Acta,1978
2. Classical and quantum probability in the ∈-model;Aerts;International Journal of Theoretical Physics,1999
3. State property systems and closure spaces: extracting the classical and nonclassical parts;Aerts,2002
4. On noncommutative spectral theory and Jordan algebras;Alfsen,1979