@inproceedings{Huttel,
    doi = {10.1109/lics.1991.151661},
    url = {https://doi.org/10.1109%2Flics.1991.151661},
    publisher = {{IEEE} Comput. Sco. Press},
    author = {H. Huttel and C. Stirling},
    title = {Actions speak louder than words: proving bisimilarity for context-free processes},
    booktitle = {[1991] Proceedings Sixth Annual {IEEE} Symposium on Logic in Computer Science}
}

@inproceedings{Huttel, doi = {10.1109/lics.1991.151661}, url = {https://doi.org/10.1109%2Flics.1991.151661}, publisher = {{IEEE} Comput. Sco. Press}, author = {H. Huttel and C. Stirling}, title = {Actions speak louder than words: proving bisimilarity for context-free processes}, booktitle = {[1991] Proceedings Sixth Annual {IEEE} Symposium on Logic in Computer Science} }