Shadows and cavities in protoplanetary disks: HD 163296, HD 141569A, and HD 150193A in polarized lightA. Garufi, S. P. Quanz, H. M. Schmid, H. Avenhaus, E. Buenzli and S. WolfA&A, 568 (2014) A40DOI: https://doi.org/10.1051/0004-6361/201424262
