@unpublished{TUW-219166, author = {B{\"o}hm, Johannes}, title = {GPT2: An improved blind model for tropospheric slant delays in VLBI and GNSS analysis}, year = {2013}, note = {talk: Retreat der Forschungsgruppe H{\"o}here Geod{\"a}sie 2013, Hohe Wand, Austria; 2013-05-13 -- 2013-05-15} }