1. Psychological factors in exceptional, extreme and torturous environments;Leach;Extreme Physiol. Med.,2016
2. Total Isolation;British Broadcasting Corporation,2014
3. Total Isolation – Programme Highlights;British Broadcasting Corporation,2014
4. The statistical Drake equation;Maccone;Acta Astronaut.,2010
5. For the original stimulus footage see: https://www.youtube.com/watch?v=VTNmLt7QX8E.