THETIS: an underwater remotely operated vehicle for water pollution measurements. - John N. Lygouras; Konstantinos A. Lalakos; Philippos G. Tsalides (Microprocess. Microsystems, 1998)

High-performance position detection and velocity adaptive measurement for closed-loop position control. - John N. Lygouras; Konstantinos A. Lalakos; Phillipos G. Ysalides (IEEE Trans. Instrum. Meas., 1998)