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 | 1982 | |
|---|---|---|
| 2 |      | Manfred Schnitzler: The isomorphism problem is polynomially solvable for certain graph languages. Graph-Grammars and Their Application to Computer Science 1982: 369-379 |
| 1980 | ||
| 1 |  | Manfred Schnitzler: Graph Grammars and the Complexity Gap in the Isomorphism Problem for Acyclic Digraphs. WG 1980: 137-149 |