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

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

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

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