no. 2
Hidden variables and 2-dimensional Hilbert space
Annales de l'institut Henri Poincaré. Section A, Physique Théorique, Tome 16 (1972) no. 2, pp. 93-102. 
@article{AIHPA_1972__16_2_93_0,
     author = {Bugajska, Krystyna and Bugajski, Slawomir},
     title = {Hidden variables and 2-dimensional {Hilbert} space},
     journal = {Annales de l'institut Henri Poincar\'e. Section A, Physique Th\'eorique},
     pages = {93--102},
     publisher = {Gauthier-Villars},
     volume = {16},
     number = {2},
     year = {1972},
     mrnumber = {389062},
     language = {en},
     url = {http://www.numdam.org/item/AIHPA_1972__16_2_93_0/}
}
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Bugajska, Krystyna; Bugajski, Slawomir. Hidden variables and 2-dimensional Hilbert space. Annales de l'institut Henri Poincaré. Section A, Physique Théorique, Tome 16 (1972) no. 2, pp. 93-102. http://www.numdam.org/item/AIHPA_1972__16_2_93_0/

[1] J.S. Bell, On the problem of hidden variables in quantum mechanics (Rev. Mod. Phys., vol. 38, 1966, p. 447-452). | MR | Zbl

[2] D. Bohm and J. Bub, A proposed solution of the measurement problem in quantum mechanics by a hidden variable theory (Rev. Mod. Phys., vol. 38, 1966, p. 453-469). | MR | Zbl

[3] A.M. Gleason, Measures on the closed subspaces of a Hilbert space (J. Math. and Mech., vol. 6, 1957, p. 885-893). | MR | Zbl

[4] J.M. Jauch and C. Piron, Can hidden variables be excluded in quantum mechanics? (Helv. Phys. Acta, vol. 36, 1963, p. 827-837). | MR | Zbl

[5] S. Kochen and E.P. Specker, The problem of hidden variables in quantum mechanics (J. Math. and Mech., vol. 17, 1967, p. 59-68). | MR | Zbl

[6] B. Mielnik, Geometry of quantum states (Commun. math. Phys., vol. 9, 1968, p. 55-80). | MR | Zbl