Cqssp: a New Technique for Establishing the Tie Between the Stellar and Quasar Celestial Reference Frames Schildknecht, T. ; Bauersima, I. ; Hugentobler, U. ; Verdun, A. ; Beutler, G. Abstract Publication: IAU Colloq. 127: Reference Systems Pub Date: 1991 Bibcode: 1991resy.coll..341S