Cosmic supernova rates in cluster vs. field galaxies Kobayashi, C. ; Tsujimoto, T. ; Nomoto, K. Abstract Publication: Astronomische Nachrichten Pub Date: 1999 DOI: 10.1002/1521-3994(199908)320:4/5<334::AID-ASNA334>3.0.CO;2-# Bibcode: 1999AN....320..334K