| Type | Title | Author | Publisher | Year |
| Article | Random Context Languages | van der Walt, A. | | 1971 |
| Article | Magic Numbers in the State Hierarchy of Finite Automata | Geffert, V. | | 2006 |
| Article | Accepting Grammars and Systems | Bordihn, H., Fernau, H. | | 1995 |
| Article | On Pebble Automata | Chang, J.H., Ibarra, O.H., Palis, M.A. | | 1986 |
| Article | How to make arbitrary grammars look like context-free grammars | Savitch, W.J. | | 1973 |
| Article | On Some Special Classes of Regular Languages | Imreh, B., Ito, M. | | |
| Article | On the Impossibility of the Homomorphic Characterization of Context-Sensitive Languages | Okawa, S., Hirose, S., Yoneda, M. | | 1986 |
| Article | A recognition algorithm for pushdown store systems | Aho, A.V., Hopcroft, J.E., Ullman, J.D. | | |
| Article | A New-Old Class of Linguistically Motivated Regulated Grammars | Marcus, S., Martín-Vide, C., Mitrana, V., Paun, Gh. | | |
| Article | Two-Way Pushdown Automata | Gray, J.N., Harrison, M.A., Ibarra, O.H. | | 1967 |
| Article | One-Way Stack Automata | Ginsburg, S., Greibach, S.A., Harrison, M.A. | | 1967 |
| Article | Ambiguity in Context Free Languages | Ginsburg, S., Ullian, J. | | 1964 |
| Article | Stack Automata and Compiling | Ginsburg, S., Greibach, S.A., Harrison, M.A. | | 1967 |
| Article | n-Parallel n-Right Linear Simple Matrix Languages | Wood, D. | | 1975 |
| Article | A note on the generative capacity of random context | Atcheson, B., Ewert, S., Shell, D. | | 2006 |
| Article | A Chomsky-Schützenberger-Stanley Type Characterization of the Class of Slender Context-Free Languages | Dömösi, P., Okawa, S. | | 2001 |
| Article | Homomorphic characterizations of poly-slender context-free languages | Dömösi, P., Hirose, S., Okawa, S. | | 2002 |
| Article | A New Form Of Homomorphic Characterization of Context-free Languages | Dömösi, P., Okawa, S. | | 2003 |
| Article | Dyck Reductions of Minimal Linear Languages Yield the Full Class of Recursively Enumerable Languages | Hirose, S., Okawa, S. | | 1996 |
| Article | Dyck Reductions are More Powerful Than Homomorphic Characterizations | Hirose, S., Kimura, H., Okawa, S. | | 1997 |
| Article | Homomorphic characterizations of recursively enumerable languages with very small language classes | Hirose, S., Okawa, S. | | 2001 |
| Article | Context-Free Languages in Biological Systems | Herman, G.T., Walker, A. | | 1975 |
| Article | A Calculus of Circular Proofs and its Categorical Semantics | Santocanale, L. | | 2001 |
| Article | Open Problems in the Emergence and Evolution of Linguistic Communication: A Road-Map for Research | Nehaniv, C.L. | | |
| Article | Finite Automata | Ésik, Z., Kuich, W. | | |
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