I open this thread to offer a starting point for those that want to deepen specific topics and to centralize the different useful sources found by the members of our community. Anybody can propose a reference to add to the list. I will update the list when I can. To ease the reading, I put the title first, then the author name and the year. The goal here is NOT to reference EVERYTHING. There are too many books on the same topics. The best option should be to propose some key readings on spe