For ISRU section, this work - https://www.lpi.usra.edu/meetings/roundtable2006/pdf/muscatello.pdf https://www.lpi.usra.edu/meetings/roundtable2006/pdf/muscate..

For ISRU section, this work - https://www.lpi.usra.edu/meetings/roundtable2006/pdf/muscatello.pdf https://www.lpi.usra.edu/meetings/roundtable2006/pdf/muscate... - is cited, 1 kg of propellant per day. Where the report authors found the mass of the system of 50 kg?