@inproceedings{Levrini,
title={The advanced terrain trackin altimeter instrument},
url={http://dx.doi.org/10.1109/igarss.1988.570553},
DOI={10.1109/igarss.1988.570553},
booktitle={International Geoscience and Remote Sensing Symposium,
“Remote Sensing: Moving Toward the 21st Century”.},
publisher={IEEE},
author={Levrini,
G.} }