TY - RPRT TI - A Practical, Affordable Cryogenic Propellant Depot Based on ULA's Flight Experience AU - Kutter, Bernard F. AU - Zegler, Frank AU - O'Neil, Gary AU - Pitchford, Brian PY - 2008 UR - https://ntrs.nasa.gov/citations/20130010201 ID - 20130010201 ER -