Optical in-situ analysis of secondary reflectors in solar tower plants A. Timinger, T. Smith, M. Walther, W. Spirkl, A. Kribus, H. Ries et P. Doron J. Phys. IV France, 09 PR3 (1999) Pr3-117-Pr3-122 DOI: 10.1051/jp4:1999318