Third-body perturbation using a single averaged model: application in nonsingular variables. Solórzano, Carlos Renato Huaura; De Almeida Prado, Antonio Fernando Bertachini — 2007 Mathematical Problems in Engineering
Analysis of electric propulsion system for exploration of Saturn. Solórzano, Carlos Renato Huaura; de Almeida Prado, Antonio Fernando Bertachini; Sukhanov, Alexander Alexandrovich — 2009 Mathematical Problems in Engineering