Monitoring water masers in star-forming regions
  An overview is given of the analysis of more than a decade of H2O maser data from our monitoring program. We find the maser emission to generally depend on the luminosity of the YSO as well as on the geometry of the SFR. There appears to be a threshold luminosity of a few times 10**4 Lsol above and below which we find different maser characteristics. 
J. Brand (1), R. Cesaroni (2), G. Comoretto (2), M. Felli (2), F.   Palagi (3), F. Palla (2), R. Valdettaro (2) ((1) Ist. di...