Planet gaps in the dust layer of 3D protoplanetary disks - II. Observability with ALMA J.-F. Gonzalez, C. Pinte, S. T. Maddison, F. Ménard and L. Fouchet A&A, 547 (2012) A58 Published online: 29 October 2012 DOI: 10.1051/0004-6361/201218806