Proc. of the nat. aerospace meeting, April, 8-10, 1981, Trevose, USA
Sensors in highway and civil engineering, 5. February, 1981, London, GB
Proc. of SPIE. Airborne reconnaissance 9, San Diego, USA, August 20-21, 1985
Proc. of the IEEE 1986 nat. aerospace and electronics conf., NAECON 1986, Dayton, USA, May 19-23