Ran Raz
Resolution lower bounds for the weak pigeonhole principle
STOC, 2002.
@inproceedings{STOC-2002-Raz02a, author = "Ran Raz", booktitle = "{Proceedings of the 34th Annual ACM Symposium on Theory of Computing}", doi = "10.1145/509907.509987", isbn = "1-58113-495-9", pages = "553--562", publisher = "{ACM}", title = "{Resolution lower bounds for the weak pigeonhole principle}", year = 2002, }