SGP Papers

Displaying Items 1 - 3 of 3

1995

Fey, A., Zacharias, N., Russell, J., & et al.,
(1995). A radio reference frame. Astronomical Journal Johnston, 110, 880–915..

1991

Russell, J., Johnston, K., Ma, C., & et al.,
(1991). A radio optical reference frame II additional radio and optical source positions in the northern hemisphere. Astron J, 101,

1990

Ma, C., Shaffer, D., de Vegt, C., Johnston, K., & Russell, J.
(1990). A radio optical reference frame I precise radio source positions determined by Mark III VLBI: Observations from 1979 to 1988 and a tie to the FK5. Astron Journal, 99, 1284.