J. Schastok

Relativistic effects in the motion of artificial satellites: The oblateness of the central body I

H. Ruder, M. Soffel, R. Wirrer, 1987 .

Numerical Solution for the Rotation of a Rigid Model Earth

H. Ruder, M. Soffel, J. Schastok, 2013 .

A new nutation series for a more realistic model earth

J. Schastok, 1997 .

Stellar sky as seen from the vicinity of a black hole

H. Ruder, M. Soffel, J. Schastok, 1987 .