1 J.H. Eberly, N.D. Piltch, and J.W. Gallagher, Multiphoton Bibliography, 1981-1982 (University of Colorado, Boulder, Colorado, 1984).
1 J.W. Gallagher, E.C. Beaty, J.. Dutton, and L.C. Pitchford, Journal of Physical and Chemical Reference Data 12, (1983).