1. Digital Time Intervalometer
2. B. Leskovar and B. Turko, “Optical timing receiver for the NASA laser ranging system,” Lawrence Berkeley Laboratory Report LBL–4219, 1977.
3. B. Leskovar and B. Turko, “Optica1 timing receiver for the NASA spaceborne ranging system,” Lawrence Berkeley Laboratory Report LBL–8129, 1978.
4. A Picosecond Resolution Time Digitizer for Laser Ranging
5. Space Borne Event Timer