Determinations of optical positions for four extragalactic radio sources with CCD von Tang, Zh., Wang, Sh., Jin, W.

Volltext

Determination of highly precise proper motions for 32 Hipparcos stars from photographic plates von Wang, Sh., Tang, Zh., Jin, W., Wang, J.

Volltext

Results of joint project on linking optical-radio reference frames von Aslan, Z., Gumerov, R., Jin, W., Khamitov, I., Maigurova, N., Pinigin, G., Protsyuk, Yu., Shulga, A., Tang, Z., Wang, S.

Volltext