Clustering of Solar Irradiance. - Miloud Bessafi; Francisco de A. T. de Carvalho; Philippe Charton; Mathieu Delsaut; Thierry Despeyroux; Patrick Jeanty; Jean-Daniel Lan Sun Luk; Yves Lechevallier; Henri Ralambondrainy; Lionel Trovalet (ECDA, 2013)