@unpublished{TUW-295987, author = {Krasna, Hana and Mayer, David and B{\"o}hm, Sigrid}, title = {Contribution of the Vienna Center for VLBI to ITRF2020}, year = {2021}, note = {talk: European Geosciences Union, General Assembly 2021 (vEGU 2021), online; 2021-04-19 -- 2021-04-30} }