Development and test of an end reflector for parabolic trough collectors T. Fend, J. León, M. Böhmer, P. Binner, F. Deidewig et R. KemmeJ. Phys. IV France, 09 PR3 (1999) Pr3-563-Pr3-568DOI: https://doi.org/10.1051/jp4:1999389