@inproceedings{bertel:hal-00085131,
TITLE = {New Improvements in HF Ionospheric Communication and Direction Finding Systems},
AUTHOR = {Bertel, Louis and Brousseau, Christian and Erhel, Yvon and Lemur, Dominique and Marie, Fran{\c c}ois and Oger, Martial},
URL = {https://hal.science/hal-00085131},
BOOK
TITLE = {2nd European Space Weather Week, ESA-ESTEC},
ADDRESS = {Noordwijk, Netherlands},
YEAR = {2005},
HAL_ID = {hal-00085131},
HAL_VERSION = {v1},
}