The following publications are possibly variants of this publication:
- Classes of Systolic Y-Tree Automata and a Comparison with Systolic Trellis AutomataEmanuela Fachini, Andrea Maggiolo-Schettini, Davide Sangiorgi. ACTA, 29(6/7):623-643, 1992.
- Chomsky Hierarchy and Systolic Y-Tree AutomataEmanuela Fachini, Angelo Monti. FUIN, 29(4):325-339, 1997.
- Systolic Y-Tree Automata: Closure Properties and Decision ProblemsEmanuela Fachini, Angelo Monti, Margherita Napoli, Domenico Parente. fct 1991: 210-219
- Languages Accepted by Systolic Y-Tree Automata: Structural CharacterizationsEmanuela Fachini, Angelo Monti, Margherita Napoli, Domenico Parente. ACTA, 29(8):761-778, 1992.
- Power of Interconnections and of Nondeterminism in Regular Y-Tree Systolic AutomataEmanuela Fachini, Jozef Gruska, Margherita Napoli, Domenico Parente. mst, 28(3):245-266, 1995.
- C-Tree Systolic AutomataEmanuela Fachini, Margherita Napoli. TCS, 56:155-186, 1988.