Hartquist, T. W.Menten, K. M.Lepp, S.Dalgarno, A.2019-09-271995Hartquist, T. W., K. M. Menten, S. Lepp, and A. Dalgarno. 1995. “On the Spatial Coincidence of Hydroxyl and Methanol Masers.” Monthly Notices of the Royal Astronomical Society 272 (1): 184–88. https://doi.org/10.1093/mnras/272.1.184.0035-87111365-2966http://nrs.harvard.edu/urn-3:HUL.InstRepos:41417377en-USJournal Article2019-09-2710.1093/mnras/272.1.184