ORBITAL MOTIONS IN BINARY AND MULTIPLE PROTOSTARS L. F. Rodríguez (IAUNAM, Morelia) L. Loinard, M. Rodríguez, & P. D’Alessio (IAUNAM, Morelia) S. Curiel,
Centimeter and Millimeter Observations of Very Young Binary and Multiple Systems -Orbital Motions and Mass Determination -Truncated Protoplanetary Disks.
