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Author: Borisov, Adrijan Varbanov

• Borisov, Adrijan Varbanov; Spirova, Margarita Georgieva: On the measurability of sets of pairs of intersecting nonisotropic straight lines of type beta in the simply isotropic space. (English). Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica, vol. 48 (2009), issue 1, pp. 7-16