| Type | Title | Author | Publisher | Year |
| Article | On a variant of a method of Berstel's and Nielsen's | Ruohonen, K. | | 1981 |
| Article | A note on recurrent words | Culik II, K., Wood, D. | | 1981 |
| Article | Context-free like restrictions on selective rewriting | Kleijn, H.C., Rozenberg, G. | | 1981 |
| Article | Concise description of finite languages | Bucher, W., Maurer, H.A., Culik II, K., Wotschke, D. | | 1981 |
| Article | Concise description of finite languages | Bucher, W., Maurer, H.A., Culik II, K., Wotschke, D. | | 1981 |
| Article | Uniform Interpretations of grammar forms | Maurer, H.A., Salomaa, A., Wood, D. | | 1981 |
| Article | Derivation Languages of Grammar Forms | Maurer, H.A., Salomaa, A., Wood, D. | | 1981 |
| Article | Completeness of Context-free Grammar Forms | Maurer, H.A., Salomaa, A., Wood, D. | | 1981 |
| Article | On the complexity of the general coloring problem | Maurer, H.A., Sudborough, J.H., Welzl, E. | | 1981 |
| Article | Time and Space Complexity of Inside-Out Macro Languages | Asveld, P.R.J. | | 1981 |
| Article | On Sub Regular 0L Forms | Albert, J., Maurer, H.A., Ottmann, Th. | | 1981 |
| Article | Linked forest manipulation system---a tool for computational semantics | Culik II, K., Farah, M. | | 1981 |
| Article | Context-Free Like Restrictions on Selective Rewriting | Kleijn, H.C., Rozenberg, G. | | 1981 |
| Article | Languages simultaneously complete for one-way and two-way log-tape automata | Hartmanis, J., Mahaney, S. | | 1981 |
| Article | Derivation Languages of Grammar Forms | Maurer, H.A., Salomaa, A., Wood, D. | | 1981 |
| Article | Synchronized E0L forms under uniform enterpretation | Maurer, H.A., Salomaa, A., Wood, D. | | 1981 |
| Article | On predecessors of Finite Languages | Maurer, H.A., Salomaa, A., Wood, D. | | 1981 |
| Article | Decidability and density in two-symbol grammar forms | Maurer, H.A., Salomaa, A., Wood, D. | | 1981 |
| Article | On the Complexity of the General Coloring Problem | Maurer, H.A., Sudborough, J.H., Welzl, E. | | 1981 |
| Article | Synchronized E0L forms under uniform interpretation | Maurer, H.A., Salomaa, A., Wood, D. | | 1981 |
| Article | Colorings and Interpterations: A connection between graphs and grammar forms | Maurer, H.A., Salomaa, A., Wood, D. | | 1981 |
| Article | Colorings and interpretations: a connection between graphs and grammar forms | Maurer, H.A., Salomaa, A., Wood, D. | | 1981 |
| Article | Pre-orders, closure operators and grammar forms | von Braunmuhl, G., Hotzel, E., Wood, D. | | 1981 |
| Article | A pushdown automton or acontext-free grammar which is more economical? | Goldstine, J., Price, J.K., Wotschke, D. | | 1981 |
| Article | Rekurse | Kopriva, J., Racansky, V. | | 1981 |
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