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• Volume 36

Author: Trch, Milan

• Kepka, Tomáš; Trch, Milan: Groupoids and the associative law III. (Szász-Hájek groupoids). (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 36 (1995), issue 1, pp. 17-30
• Kepka, Tomáš; Trch, Milan: Groupoids and the associative law V. (Szász-Hájek groupoids fo type (A, A, B)). (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 36 (1995), issue 1, pp. 31-44