1. Aerts, D., The One and the Many, Doctoral Dissertation, Brussels Free University, 1981.
2. Aerts, D., “Description of many physical entities without the paradoxes encountered in quantum mechanics”, Found. Phys., 12, 1982, pp. 1131–1170.
3. Aerts, D. and Daubechies, I., “Physical justification for using tensor product to describe two quantum systems as one joint system”, Heiv. Phys. Acta, 51, 1978, pp. 661–675.
4. Alfsen, E.M. and Shultz, F.W., Non-commutative Spectral Theory for Affine Function Spaces on Convex Sets, Memoirs of the Amer. Math. Soc., 172, 1976.
5. Belinfante, F.J., A Survey of hidden variables Theories, Pergamon Press, Oxford, 1973.