Diego Figueira. Decidability of Downward XPath. ACM Trans. Comput. Log., 13(4):34, 2012. [doi]
@article{Figueira12, title = {Decidability of Downward XPath}, author = {Diego Figueira}, year = {2012}, doi = {10.1145/2362355.2362362}, url = {http://doi.acm.org/10.1145/2362355.2362362}, researchr = {https://researchr.org/publication/Figueira12}, cites = {0}, citedby = {0}, journal = {ACM Trans. Comput. Log.}, volume = {13}, number = {4}, pages = {34}, }