1. AGI . (2021). Systems Tool Kit (STK). AGI. https://www.agi.com/products/stk
2. Batista, A. , Gomez, E. , Qiao, H. , & Schubert, K. E. (2012). Constellation design of a lunar global positioning system using CubeSats and chip-scale atomic clocks. WorldComp. https://www.r2labs.org/pubs/armani_batista__lunar_gps_worldcomp_2012_Final.pdf
3. GPS multireceiver joint direct time estimation and spoofer localization.;Bhamidipati;IEEE Transactions on Aerospace and Electronic Systems,2019
4. Bhamidipati, S. , Mina, T. , & Gao, G. (2021). Design considerations of a lunar navigation satellite system with time-transfer from Earth-GPS. Proc. of the 34th International Technical Meeting of the Satellite Division of the Institute of Navigation (ION GNSS+ 2021), St. Louis, MO, 950–965. https://doi.org/10.33012/2021.18021
5. Bolles, D. (2020). Terrain relative navigation: Landing between the hazards. NASA. https://science.nasa.gov/technology/technology-highlights/terrain-relative-navigation-landing-between-the-hazards