@book{UBHD-1696610, author={Asteriadis, Georgios}, title={Determination of precession and galactic rotation from the proper motions of the AGK3}, year={1975}, pages={53 Bl.}, language={eng}, school={Heidelberg, Univ., Diss., 1975}, library={UB [Signatur: 75 Q 1025]}, }