1 C.R. Vidal, J.. Cooper, and E.W. Smith, Unified Theory Calculations of Stark Broadened Hydrogen Lines Including Lower State Interactions (U.S. National Bureau of Standards, 1971), pp. 263–281.
1 C.R. Vidal, J.. Cooper, and E.W. Smith, Journal of Quantitative Spectroscopy and Radiative Transfer 10, (1970).