Where are you, Scutum? Tracking down a spiral arm with maser astrometry Immer, K. ; Li, J. ; Quiroga-Nuñez, L. H. ; Reid, M. J. ; Zhang, B. ; Moscadelli, L. Abstract Publication: 14th European VLBI Network Symposium & Users Meeting (EVN 2018) Pub Date: November 2018 DOI: 10.22323/1.344.0055 Bibcode: 2018evn..confE..55I