Current-sourcing push-pull parallel-resonance inverter (CS-PPRI): theory and application as a discharge lamp driver. - Michael Gulko; Shmuel Ben-Yaakov (IEEE Trans. Ind. Electron., 1994)

Design and performance of an electronic ballast for high-pressure sodium (HPS) lamps. - Sam Ben-Yaakov; Michael Gulko (IEEE Trans. Ind. Electron., 1997)