Variability of the H2O maser associated with the Mira variable RS Virginis E. E. Lekht, J. E. Mendoza-Torres, G. M. Rudnitskij and A. M. Tolmachev A&A, 376 3 (2001) 928-940 Published online: 15 September 2001 DOI: 10.1051/0004-6361:20010967