Current problems of determining distances to galaxies -- Multifrequency observations of recent supernovae -- Supernova observations at McDonald observatory -- Spectropolarimetry of supernovae -- Radio emission from a type I supernova -- Radio emission from type II supernovae -- Radio observations of historical, extragalactic supernovae -- Discovery of an entire population of radio supernova candidates in the nucleus of messier 82 -- Detecting supernova remnants in external galaxies -- Diameter determinations of radio supernovae and the distance scale -- Supernove interaction with a circumstellar wind and the distance to SN 1979c -- Model and geometry dependence of radio distance determinations of extragalactic supernovae -- Optical supernovae and the hubble constant -- Type I supernovae as standard candles -- Radius and absolute magnitude of a Cepheid variable -- Astrophysical distances to type II supernovae -- Model atmospheres for type I supernovae -- Accuracy of model parameters from spectroscopic fine analyses of supernovae -- Physical models for type I supernovae and the distance scale -- A preliminary discussion of Hose-Einstein diffusion in supernovae -- Supernovae up close.