John E. Hopcroft, Jeffrey D. Ullman. Nonerasing Stack Automata. J. Comput. Syst. Sci., 1(2):166-186, 1967.
@article{HopcroftU67,
title = {Nonerasing Stack Automata},
author = {John E. Hopcroft and Jeffrey D. Ullman},
year = {1967},
tags = {e-science},
researchr = {https://researchr.org/publication/HopcroftU67},
cites = {0},
citedby = {0},
journal = {J. Comput. Syst. Sci.},
volume = {1},
number = {2},
pages = {166-186},
}