1. Martin,J.N.:ArchitectureDefinition-ANewProcessintheISOInternationalSystemsEngineeringStandard.25thAnnual INCOSE InternationalSymposium, Seattle, WA, 13-16 July2015.
2. NASA:NationalAeronauticsandSpaceAdministration2014StrategicPlan.2014
3. National Research Council (NRC): Pathways to Exploration: Rationales and Approaches for a U.S. Program of Human SpaceExploration.2014. http://www.nap.edu/catalog.php?record_id=18801