The structure of disks around intermediate-mass young stars from mid-infrared interferometry - Evidence for a population of group II disks with gapsJ. Menu, R. van Boekel, Th. Henning, Ch. Leinert, C. Waelkens and L. B. F. M. WatersA&A, 581 (2015) A107DOI: https://doi.org/10.1051/0004-6361/201525654