nouveau 
XLS : 
https://docs.google.com/spreadsheets/d/1eM6czLT3LdrjJnRdUwXx6iX0IDXICNl6uBA4hL_ojiM/edit?gid=0#gid=0


slides = 
https://docs.google.com/presentation/d/1dWLUtCR7Ij3D8IKmJXZpNnVZni7kF6ggt4nhuCWHgL4/edit?usp=sharing