@conference {OA2000,
	title = {Control System for Power Converter of DC to Sinusoidal AC Voltage},
	booktitle = {National Conference (with international participation) of Power Electronics SILEKTRON?83},
	year = {1983},
	url = {http://oa.uninova.pt/2000/},
	author = {Branimir Natchev and Stanimir Valtchev}
}
