October 4, 2023 D. Arnas, R. Linares “Approximate Analytical Solution to the Zonal Harmonics Problem Using Koopman Operator Theory” Journal of Guidance Control and Dynamics [07315090] 44.11 (2021): 1909-1923. Print. Share this 44.11 (2021): 1909-1923. Print."] Related Stories See all news Conservation of Complexity: The First Law of System Science Two from AeroAstro named among 2023 IAF Emerging Space Leaders See all news