| 1994 |
|---|
| 6 | EE | Alexander V. Ivashchenko:
Contractible transformations do not change the homology groups of graphs.
Discrete Mathematics 126(1-3): 159-170 (1994) |
| 5 | EE | Alexander V. Ivashchenko,
Yeong-Nan Yeh:
Minimal graphs of a torus, a projective plane and spheres and some properties of minimal graphs of homotopy classes.
Discrete Mathematics 126(1-3): 171-178 (1994) |
| 4 | EE | Alexander V. Ivashchenko:
Graphs of spheres and tori.
Discrete Mathematics 128(1-3): 247-255 (1994) |
| 3 | EE | Alexander V. Ivashchenko:
Some properties of contractible transformations on graphs.
Discrete Mathematics 133(1-3): 139-145 (1994) |
| 1993 |
|---|
| 2 | EE | Alexander V. Ivashchenko:
The coordinate representation of a graph and n-universal graph of radius 1.
Discrete Mathematics 120(1-3): 107-114 (1993) |
| 1 | EE | Alexander V. Ivashchenko:
Representation of smooth surfaces by graphs. Transformations of graphs which do not change the Euler characteristic of graphs.
Discrete Mathematics 122(1-3): 219-233 (1993) |
