@InProceedings{DDPW83,
author={Danny Dolev and Cynthia Dwork and
Nicholas Pippenger and Avi Wigderson},
title={Superconcentrators, generalizers
and generalized connectors with limited
depth},
crossref={STOC15},
booktitle={Proceedings of the 15th STOC},
pages={42-51},
year={1983},
}