00327nam a2200097Ia 4500008004100000100002500041245008600066245002700152260000900179856004100188160531s9999    xx            000 0 und d  aKhmelnik, Solomon I.  aVariational Principle of Extremum in Electromechanical and Electrodynamic Systems  cby Solomon I. Khmelnik  c2012  uhttp://vixra.org/pdf/1402.0026v2.pdf