@book {Visser_1972,
	title = {Werkstoffabtrag durch Elektronen{\textendash}und Photonenstrahlen},
	year = {1972},
	publisher = {Technishe Runhschau},
	organization = {Technishe Runhschau},
	address = {Bern},
	author = {A. Visser}
}