Possible approaches to remote sensing of photosynthetic activity. - Ismaël Moya; Aurélie Cartelat; Zoran G. Cerovic; J.-M. Ducruet; S. Evain; J. Flexas; Yves Goulas; Juliette Louis; S. Meyer; N. Moise; Abderrahmane Ounis (IGARSS, 2003)