@book{857,
	author = {Gebert, K. and Edwards, Kenneth R.},
	title = {Transformers: principles and applications},
	publisher = {American Technical Pub,},
	year = {1974.},
	address = {U.S.A:},
	edition = {2nd ed.},
	url = {http://10.10.170.122:8080/browse/book/28152}
}