Solar System VLBI Astrometry: the Venus Ballon ExperimentR. A. Preston, P. Kaufmann, G. H. Purcell et al.|Unknown|1988Cited by 0
Solar System VLBI Astrometry: The Venus Balloon ExperimentR. A. Preston, P. Kaufmann, J. Ellis et al.|Symposium - International Astronomical Union|1988Cited by 0