Vidal C.R., 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.
Vidal C.R., J. Cooper, and E.W. Smith, Journal Of Quantitative Spectroscopy And Radiative Transfer 10, 1011\textendash1063 (1970).