@inproceedings{Reif_1977,
    doi = {10.1145/512950.512961},
    url = {https://doi.org/10.1145%2F512950.512961},
    year = {1977},
    publisher = {{ACM} Press},
    author = {John H. Reif and Harry R. Lewis},
    title = {Symbolic evaluation and the global value graph},
    booktitle = {Proceedings of the 4th {ACM} {SIGACT}-{SIGPLAN} symposium on Principles of programming languages  - {POPL}'77}
}

@inproceedings{Reif_1977, doi = {10.1145/512950.512961}, url = {https://doi.org/10.1145%2F512950.512961}, year = {1977}, publisher = {{ACM} Press}, author = {John H. Reif and Harry R. Lewis}, title = {Symbolic evaluation and the global value graph}, booktitle = {Proceedings of the 4th {ACM} {SIGACT}-{SIGPLAN} symposium on Principles of programming languages - {POPL}'77} }