Statistical maps. II: Operational random variables and the Bell phenomenon Sławomir Bugajski — 2001 Mathematica Slovaca
Hidden variables and 2-dimensional Hilbert space Krystyna Bugajska; Slawomir Bugajski — 1972 Annales de l'I.H.P. Physique théorique
The lattice structure of quantum logics Krystyna Bugajska; Slawomir Bugajski — 1973 Annales de l'I.H.P. Physique théorique