Variability of the H2O maser associated with U OrionisG. M. Rudnitskij, E. E. Lekht, J. E. Mendoza-Torres, M. I. Pashchenko and I. I. BerulisAstron. Astrophys. Suppl. Ser., 146 3 (2000) 385-395DOI: https://doi.org/10.1051/aas:2000278
