1. Earth orientation parameters 1899.7-1992.0 in the ICRS based on the HIPPARCOS reference frame Creator: Vondrák, Jan, Pešek, Ivan, Ron, Cyril, and Čepek, Aleš Format: bez média and svazek Type: model:article and TEXT Subject: astrometric satellite and observations Language: Czech Rights: http://creativecommons.org/publicdomain/mark/1.0/ and policy:public