RR Lyrae variables in the globular cluster M 5 J. Kaluzny, A. Olech, I. Thompson, W. Pych, W. Krzeminski and A. Schwarzenberg-Czerny Astron. Astrophys. Suppl. Ser., 143 2 (2000) 215-226 Published online: 15 April 2000 DOI: 10.1051/aas:2000178