1. Automatic flight control system for automatic terrain-following.
2. The Development of Terrain Following Radar
3. ShupeN. K. “Application of a Particular Solution of the Euler–Poisson Equation to Terrain-Following and Formation-Flight Aircraft Subsystems,” Tech. Rept. AD0632128, Defense Technical Information Center, Fort Belvoir, VA, 1966.
4. WeirD. H. “Compilation and Analysis of Flight Control System Command Inputs,” Tech. Rept. AD0483621, Defense Technical Information Center, Fort Belvoir, VA, 1966.
5. Optimal aircraft terrain-following analysis and trajectory generation