Molteni, S.Courret, G.Paule, B.Michel, L.Scartezzini, J.-L.2005-01-122005-01-122005-01-12200110.1016/S0038-092X(01)00065-2https://infoscience.epfl.ch/handle/20.500.14299/1927961870Design of anidolic zenithal lightguides for daylighting of underground spacestext::journal::journal article::research article