VLBI OBSERVATIONS OF SOUTHERN EGRET IDENTIFICATIONS .1. PKS-0208-512,PKS-0521-365, AND PKS-0537-441

We present high-resolution very long baseline interferometry images of three southern radio sources that the Energetic Gamma-Ray Experiment Telescope (EGRET), on board the Compton Gamma Ray Observatory, has ide ntified as greater than 100 MeV gamma-ray sources. These are the first results in a continuing program of VLBI observations of southern EGRE T identifications. For two of these sources, PKS 0208-512 (at 4.851 GH z) and PKS 0537-441 (at 4.851 and 8.418 GHz), the images represent fir st-epoch observations. For the remaining lower redshift object, PKS 05 21-365, we present images from three epochs at 4.851 GHz and an image from one further epoch at 8.418 GHz, spanning approximately 1 yr. We d iscuss the need for further extensive VLBI observations of EGRET-ident ified radio sources.