Further study of H2O lines in the umbral spectrum in the region of 0.93[mu] (research note) /
Mallia, E. A.
Blackwell, D. E.
Petford, A. D.
Oxford :  Department of Astrophysics, University Observatory, 
1971.
Publication no. 38.
Reprinted from Solar physics, vol. 20, 1971.