Jean-Pierre Braquelaire, Bruno Courcelle. The Solutions of Two Star-Height Problems for Regular Trees. Theoretical Computer Science, 30:205-239, 1984.
@article{BraquelaireC84,
title = {The Solutions of Two Star-Height Problems for Regular Trees},
author = {Jean-Pierre Braquelaire and Bruno Courcelle},
year = {1984},
researchr = {https://researchr.org/publication/BraquelaireC84},
cites = {0},
citedby = {0},
journal = {Theoretical Computer Science},
volume = {30},
pages = {205-239},
}