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• Volume 26

Author: Zelinka, Bohdan

• Zelinka, Bohdan: The Hadwiger number of an infinite graph. (English). Mathematica Slovaca, vol. 26 (1976), issue 2, pp. 153-157
• Zelinka, Bohdan: Hadwiger numbers of finite graphs. (English). Mathematica Slovaca, vol. 26 (1976), issue 1, pp. 23-30
• Zelinka, Bohdan: Intersection graphs of trees and tree algebras. (English). Mathematica Slovaca, vol. 26 (1976), issue 4, pp. 343-350