Graceful Trees. The Analysis of Problem and the Prospects von D. A. Petreniuk

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Models of Klein Surface Obstruction Graphs von V. I. Petrenjuk, D. A. Petreniuk

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About Structure of Graph Obstructions for Klein Surface with 9 Vertices von V. I. Petreniuk, D. A. Petreniuk

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A new upper boundary of the non-oriented type of gluing of simple graphs von B. I. Petreniuk, D. A. Petreniuk

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Structure of Projective Planar Subgraphs of the Graph Obstructions for Fixed Surface von V. I. Petreniuk, D. A. Petreniuk, O. V. Oryshaka

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Upper bound of oriented genus of a simple graph gluing von V. I. Petreniuk, D. A. Petreniuk, I. E. Shulinok

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Structure 7-vertecses subgraphs 8-vertices graph-obstructions for torus von B. I. Petreniuk, D. A. Petreniuk, I. E. Shulinok

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