Yuqing Wu, Dirk Van Gucht, Marc Gyssens, Jan Paredaens. A Study of a Positive Fragment of Path Queries: Expressiveness, Normal Form and Minimization. Comput. J., 54(7):1091-1118, 2011. [doi]
@article{WuGGP11,
title = {A Study of a Positive Fragment of Path Queries: Expressiveness, Normal Form and Minimization},
author = {Yuqing Wu and Dirk Van Gucht and Marc Gyssens and Jan Paredaens},
year = {2011},
doi = {10.1093/comjnl/bxq055},
url = {http://dx.doi.org/10.1093/comjnl/bxq055},
researchr = {https://researchr.org/publication/WuGGP11},
cites = {0},
citedby = {0},
journal = {Comput. J.},
volume = {54},
number = {7},
pages = {1091-1118},
}