@conference {OA1997,
	title = {High Efficiency Resonant Power Conversion},
	booktitle = {High Efficiency Resonant Power Conversion},
	year = {1992},
	month = {April},
	abstract = {Mode of operation and area of rnhanced efficiency for series-resonant converters is presented. Frequency control on voltage source DC-DC converters is discussed and other principles of control are introduced. Optimum modes of operation for power transistor resonant converters are also considered. For even better efficiency a resonant current shaping is discussed.},
	url = {http://oa.uninova.pt/1997/},
	author = {Stanimir Valtchev}
}
