The use of quasars for the construction of a future extragalactic inertial reference frame
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Quasars will provide optimal candidates for the construction of a future inertial extragalactic reference frame in astronomy. The selection of suitable candidate objects depends on their individual optical and/or radio properties. Optical and Radio quasar survey projects will provide a sound basis to achieve this goal.
Most aspects of this astrometric key-project have been discussed extensively in the recent literature. Instead of duplicating this effect here, a small selection of references is given which covers the main topics of this exciting field of research.