| No. | Title | Author | Year |
|---|---|---|---|
| 1 | A Pumping Lemma for Pushdown Graphs of Any Level | Parys, Pawel | 2012 |
| 2 | Decidable classes of documents for XPath | Bárány, Vince et al. | 2012 |
| 3 | Variants of Collapsible Pushdown Systems | Parys, Pawel | 2012 |
| 4 | Collapse Operation Increases Expressive Power of Deterministic Higher Order Pushdown Automata | Parys, Pawel | 2011 |
| Number of result pages: | 1 |
| Number of documents: | 4 |
