MAMBO 1.25 mm observations of 3CR quasars at z ~ 1.5: on the debate of the unified schemesM. Haas, R. Chini, S. A. H. Müller, F. Bertoldi and M. AlbrechtA&A, 445 1 (2006) 115-122DOI: https://doi.org/10.1051/0004-6361:20054121