1. The Global Exploration Roadmap;ISECG;Tech. Rep.,2018
2. NASA technology roadmaps TA 2: in-space propulsion technologies;NASA;Tech. Rep.,2015
3. NASA strategic technology investment plan;NASA;Tech. Rep.,2017
4. Activities of the H2020 strategic research cluster on SpaceElectric propulsion (2015-2019);Gonzalez del Amo,2019
5. Ablative pulsed plasma thrusters R&D in Russia since the beginning of the 90s;Nickolay,2013