Olsen, O.M.; Rasmussen, G.L.; Indregard, M.; Oynes, F. (2001). "SAR processing algorithms in the KSPT ENVISAT ASAR processor". IGARSS 2001. Scanning the Present and Resolving the Future. Proceedings. IEEE 2001 International Geoscience and Remote Sensing Symposium (Cat. No.01CH37217). Vol. 7. pp. 3009–3011. doi:10.1109/IGARSS.2001.978237. ISBN0-7803-7031-7. S2CID62254495.
Olsen, O.M.; Rasmussen, G.L.; Indregard, M.; Oynes, F. (2001). "SAR processing algorithms in the KSPT ENVISAT ASAR processor". IGARSS 2001. Scanning the Present and Resolving the Future. Proceedings. IEEE 2001 International Geoscience and Remote Sensing Symposium (Cat. No.01CH37217). Vol. 7. pp. 3009–3011. doi:10.1109/IGARSS.2001.978237. ISBN0-7803-7031-7. S2CID62254495.