Deepak Kapur, Paliath Narendran. Matching, unification and complexity. ACM Comm. Computer Algebra, 21(4):6-9, 1987. [doi]
@article{KapurN87,
title = {Matching, unification and complexity},
author = {Deepak Kapur and Paliath Narendran},
year = {1987},
doi = {10.1145/36330.36332},
url = {http://doi.acm.org/10.1145/36330.36332},
researchr = {https://researchr.org/publication/KapurN87},
cites = {0},
citedby = {0},
journal = {ACM Comm. Computer Algebra},
volume = {21},
number = {4},
pages = {6-9},
}