@conference {OA2002,
	title = {Power Transistor Pulse Generator for Technological Purposes},
	booktitle = {Jubileum Scientific Session of VMEI?Gabrovo, Power Electronics Section},
	year = {1986},
	month = {October},
	url = {http://oa.uninova.pt/2002/},
	author = {Stanimir Valtchev and Georgi Krustev and Evgeni Popov}
}
