Roger W. Ehrich, S. S. Yau. Two-Way Sequential Transductions and Stack Automata. Inf. Comput., 18(5):404-446, June 1971.
@article{EhrichY71,
title = {Two-Way Sequential Transductions and Stack Automata},
author = {Roger W. Ehrich and S. S. Yau},
year = {1971},
month = {June},
researchr = {https://researchr.org/publication/EhrichY71},
cites = {0},
citedby = {0},
journal = {Inf. Comput.},
volume = {18},
number = {5},
pages = {404-446},
}