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• Volume 117

Author: Zelinka, Bohdan

• Zelinka, Bohdan: Equivalences between isomorphism classes on infinite graphs. (English). Mathematica Bohemica, vol. 117 (1992), issue 2, pp. 151-155
• Zelinka, Bohdan: Semidomatic and total semidomatic numbers of directed graphs. (English). Mathematica Bohemica, vol. 117 (1992), issue 1, pp. 1-8
• Zelinka, Bohdan: Tolerances on poset algebras. (English). Mathematica Bohemica, vol. 117 (1992), issue 1, pp. 93-97