@book{wittig1999,
	title = {Sicherheit bei der Werkstückspannung},
	address = {Verl. Inst. für Arbeitswiss.},
	annote = {112 S},
	author = {{Karl-Heinz} Wittig and {Roland} Grosser},
	howpublished = {Kassel},
	url = {http://gso.gbv.de/DB=2.1/CMD?ACT=SRCHA&SRT=YOP&IKT=1016&TRM=ppn+270000852&sourceid=fbw_bibsonomy},
	year = {1999},
	biburl = {http://www.bibsonomy.org/bibtex/21952bb16e52bcde7c034ce4d9b9af555/fbw},
	description = {imported},
	isbn = {3-923697-28-7},
	keywords = {Spannvorrichtung }
}