Euler, Norbert ; Euler, ; Basarab-Horwath, ; Fushchych, (1995):
Amplitude-phase representation for solutions of nonlinear d'Alembert equations.
In: Journal of physics. A: Mathematical and general. 28 (1995), S. 6193-6201, [Article]

Becker, ; Sauermann, ; Bourtzos, ; Euler, (1993):
LEICA SR-299 Receiver Performance in Static and Kinematic Applications.
In: ION-GPS-93, [Conference or Workshop Item]