Joyce Friedman. A Semi-Decision Procedure for the Functional Calculus. Journal of the ACM, 10(1):1-24, 1963. [doi]
@article{Friedman63, title = {A Semi-Decision Procedure for the Functional Calculus}, author = {Joyce Friedman}, year = {1963}, doi = {10.1145/321150.321151}, url = {http://doi.acm.org/10.1145/321150.321151}, researchr = {https://researchr.org/publication/Friedman63}, cites = {0}, citedby = {0}, journal = {Journal of the ACM}, volume = {10}, number = {1}, pages = {1-24}, }