Cluster AgeS Experiment. CCD photometry of SX Phoenicis variables in the globular cluster M 55W. Pych, J. Kaluzny, W. Krzeminski, A. Schwarzenberg-Czerny and I. B. ThompsonA&A, 367 1 (2001) 148-158DOI: https://doi.org/10.1051/0004-6361:20000349
