@InProceedings{LIS48,
title = {Hierarchical Learning in Stochastic Domains: Preliminary Results},
author = {Leslie Pack Kaelbling},
year = {1993},
url = {http://people.csail.mit.edu/lpk/papers/ml93.ps},
booktitle = {Proceedings of the Tenth International Conference on Machine Learning},
address = {Amherst, Massachusetts},
publisher = {Morgan Kaufmann},
}