@book{2515,
	author = {Jonker, Johan Lodewijk Hendrik.},
	title = {Stroomverdeeling in versterkerbuizen ... /},
	publisher = {Gedrukt bij den technischen Boekhandel en Drukkerij Waltman (A.J. Mulder),},
	year = {1942.},
	address = {Delft :},
	note = {Summary in English.}
}