Stellar evolution, GRB and their hosts I. E. Panchenko, V. M. Lipunov, K. A. Postnov and M. E. Prokhorov Astron. Astrophys. Suppl. Ser., 138 3 (1999) 517-518 Published online: 15 September 1999 DOI: 10.1051/aas:1999333