1. Basic Concepts of Algebraic Topology;Croom,1978
2. Topological characteristics of molecular spaces;Ivashchenko,1984
3. Contractible molecular spaces;Ivashchenko,1985
4. Geometrical representation of a graph;Ivashchenko;Kibernetika,1988
5. The coordinate representation of a graph and n-universal graph of radius 1;Ivashchenko;Discrete Math.,1993