A study of the asymmetry in the H2O maser line at λ = 1.35 cm on the base of the hyperfine structureE. E. Lekht, N. A. Silant'ev, G. M. Rudnitskij and G. A. AlexeevaA&A, 492 2 (2008) 475-480DOI: https://doi.org/10.1051/0004-6361:200810019
