Observations of YSO Circumstellar Discs
  We present the results of short baseline interferometry observations at submillimetre wavelengths, using a two-element interferometer comprising the JCMT and CSO, of circumstellar discs around young YSOs. We model data for the Class 0 protostar IRAS03282 and the Class I protostar L1709B with discs and compare them with previously published results. We find evidence for the ratio of the disc mass to envelope mass to increase as the objects evolve. 
D. Ward-Thompson, P. Andre, O. P. Lay