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We use the Gurvits, Kellermann, Frey compact radio source angular size versus redshift data to place constraints on cosmological model parameters in models with and without a constant or time-variable cosmological constant. The resulting constraints are consistent with but weaker than those determined using current supernova apparent magnitude versus redshift data. Subject headings: cosmology: cosmological parameters—cosmology: observation—largescale structure of the universe 1.
Chen et al. (Fri,) studied this question.