Article ISI
ApJ  (2010)

The Nature of Transition Circumstellar Disks. I. The Ophiuchus Molecular Cloud

Cieza, Lucas A.; Schreiber, Matthias R.; Romero, Gisela A.; Mora, Marcelo D.; Merin, Bruno; Swift, Jonathan J.; Orellana, Mariana; Williams, Jonathan P.; Harvey, Paul M.; Evans, Neal J., II