Cluster of electric thrusters for astronautic and robotic INPPS flagship space flights to Mars and Europa moon oleh Frank Jansen, Tommaso Andreussi, Giovanni Cesarretti, Manfred Ehresmann, Julia Grill, Georg Herdrich, Ikkoh Funaki, Nathalie Girard, Jan Thimo Grundmann, David Krejci, Hans Leiter, Frederic Masson, Volker Maiwald, Tommaso Misuri, Stephane Oriol, Antonio Piragino, Alexander Reissner, Lars Schanz