@unpublished{TUW-239033, author = {Sch{\"o}nberger, Caroline and Gnilsen, Paul and B{\"o}hm, Johannes and Haas, R.}, title = {The contribution of the Twin Telescopes at Nonsala and Wettzell to the VGOS System}, year = {2015}, note = {poster presentation: 22nd Meeting of the European VLBI Group for Geodesy and Astrometry, Ponta Delgada, Sao Miguel, Azores; 2015-05-17 -- 2015-05-21} }