1. Utilization of navigation data for aerial triangulation;Ackermann;International Archives of Photogrammetry and Remote Sensing,1984
2. Ackermann, F., 1991. GPS for photogrammetry. Tutorial on Mathematical Aspects of Data Analysis, ISPRS ICWG III/VI, pp. 17–70
3. Practical experience with GPS-supported aerial triangulation;Ackermann;Photogrammetric Record,1994
4. Applanix,, 2007. Product outline POSPacTM Air. http://www.applanix.com/products/airborne.html (Accessed 31.03.09)
5. Bruton, A.M., Mostafa, M.M.R., Scherzinger, B., 2001. Airborne DGPS without dedicated base stations for mapping applications. In: Proceedings of ION-GPS 2001, Salt Lake City, USA (on CDROM)