How will people organize themselves? What equipment will they bring? How will they extract in-situ resources? What kind of skills are needed? Obviously, there's a lot to think about when it comes to establishing any kind of sustained presence on another planet.
His paper is published in Scientific Reports. The study is titled 'Minimum Number of Settlers for Survival on Another Planet.' The author is Jean-Marc Salotti, a professor at Bordeaux Institut National Polytechnique. A new study pegs the minimum number of settlers at 110.