Sources and scientific references: Human mission architecture and return challenges: Drake, Hoffman & Beaty (2010), Human Exploration of Mars Design Reference Architecture 5.0 https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20090040343.pdf One-way Mars mission and cost reduction: Schulze-Makuch & Davies (2010), To Boldly Go: A One-Way Human Mission to Mars https://thejournalofcosmology.com/Mars108.html Producing return fuel on Mars: Kleinhenz & Paz (2017), An ISRU Propellant Production System to Fully Fuel a Mars Ascent Vehicle https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20170001421.pdf Radiation exposure during a Mars journey: Zeitlin et al. (2013), Measurements of Energetic Particle Radiation in Transit to Mars on the Mars Science Laboratory https://pubmed.ncbi.nlm.nih.gov/23723233/ Isolation and psychological effects: Basner et al. (2014), Psychological and Behavioral Changes during Confinement in a 520-Day Simulated Interplanetary Mission to Mars https://doi.org/10.1371/journal.pone.0093298