@inproceedings{kmsigir,
author = {P. Kilpel{\"a}inen and Heikki Mannila},
booktitle = {ACM SIGIR '93: Proceedings of the 16th Annual International Conference on Research and Development in Information Retrieval},
pages = {214--222},
title = {Retrieval from hierarchical texts using partial patterns},
year = {1993},
}