@phdthesis{TUW-210657, author = {B{\"o}hm, Sigrid}, title = {Tidal excitation of Earth rotation observed by VLBI and GNSS}, school = {Geod{\"a}sie und Geophysik}, year = {2012}, url = {http://www.ub.tuwien.ac.at/diss/AC07814286.pdf} }