Peter Raulefs, Jörg H. Siekmann, Peter Szabó, E. Unvericht. A short survey on the state of the art in matching and unification problems. ACM Comm. Computer Algebra, 13(2):14-20, 1979. [doi]
@article{RaulefsSSU79,
title = {A short survey on the state of the art in matching and unification problems},
author = {Peter Raulefs and Jörg H. Siekmann and Peter Szabó and E. Unvericht},
year = {1979},
doi = {10.1145/1089208.1089210},
url = {http://doi.acm.org/10.1145/1089208.1089210},
researchr = {https://researchr.org/publication/RaulefsSSU79},
cites = {0},
citedby = {0},
journal = {ACM Comm. Computer Algebra},
volume = {13},
number = {2},
pages = {14-20},
}