@conference {OA1998,
	title = {Power Converter of DC to Sinusoidal AC Voltage for Robotic Purposes},
	booktitle = {Scientific Session VMEI?83, Section Robotics},
	year = {1983},
	url = {http://oa.uninova.pt/1998/},
	author = {Vasil Vasilev and Branimir Natchev and Stanimir Valtchev}
}
