m├ęthode variationnelle

[1975] A variational Hartree-type calculation ; R. T. Robiscoe ; American Journal of Physics 43 (jun 1975) p. 538 [lien]
[1977] Variational method for two-electron atoms ; M. K. Srivastava ; R. K. Bhaduri ; American Journal of Physics 45 (mai 1977) p. 462 [lien]
[1994] The variational method-Why stop halfway? ; Marten J. ten Hoor ; American Journal of Physics 62 (fev 1994) p. 166 [lien]