@book{hess1993,
	title = {Principles of microeconomics : an analytical approach},
	address = {West Publ. Co.},
	annote = {XVI, 371 S},
	author = {{Peter N.} Hess and {Clark G.} Ross},
	howpublished = {Minneapolis/St. Paul [u.a.]},
	url = {http://gso.gbv.de/DB=2.1/CMD?ACT=SRCHA&SRT=YOP&IKT=1016&TRM=ppn+122688627&sourceid=fbw_bibsonomy},
	year = {1993},
	biburl = {http://www.bibsonomy.org/bibtex/21a81f0fc1a3a5568b6c32becea63f4d0/fbw},
	description = {imported},
	isbn = {0-314-01257-5},
	keywords = {imported }
}