Henning Bordihn, Markus Holzer, Martin Kutrib. Unsolvability levels of operation problems for subclasses of context-free languages. Int. J. Found. Comput. Sci., 16(3):423-440, 2005. [doi]
@article{BordihnHK05,
title = {Unsolvability levels of operation problems for subclasses of context-free languages},
author = {Henning Bordihn and Markus Holzer and Martin Kutrib},
year = {2005},
doi = {10.1142/S0129054105003078},
url = {http://dx.doi.org/10.1142/S0129054105003078},
tags = {context-aware},
researchr = {https://researchr.org/publication/BordihnHK05},
cites = {0},
citedby = {0},
journal = {Int. J. Found. Comput. Sci.},
volume = {16},
number = {3},
pages = {423-440},
}