Frank Neven, Thomas Schwentick. On the power of tree-walking automata. Inf. Comput., 183(1):86-103, 2003. [doi]
@article{NevenS03:0,
title = {On the power of tree-walking automata},
author = {Frank Neven and Thomas Schwentick},
year = {2003},
doi = {10.1016/S0890-5401(03)00013-0},
url = {http://dx.doi.org/10.1016/S0890-5401(03)00013-0},
researchr = {https://researchr.org/publication/NevenS03%3A0},
cites = {0},
citedby = {0},
journal = {Inf. Comput.},
volume = {183},
number = {1},
pages = {86-103},
}