Project M³—a study for a manned Mars mission in 2031
Taraba M., K. Zwintz, C. Bombardelli, J. Lasue, P. Rogler, V. Ruelle, J. Schlutz, M. Schüßler, S. O’Sullivan, B. Sinzig, M. Treffer, A. Valavanoglou, M.V. Quickelberghe, M. Walpole, L. Wessels
Science Acta Astronautica, 58, 88-104 (2006)