| |
| 2000 | ||
|---|---|---|
| 2 | Adrian Chitu: Bounded Semilinear Languages and PC Grammar Systems. Recent Topics in Mathematical and Computational Linguistics 2000: 68-81 | |
| 1997 | ||
| 1 | Adrian Chitu: PC Grammar Systems Versus Some Non-Context-Free Constructions from Natural and Artificial Languages. New Trends in Formal Languages 1997: 278-287 | |