@article{Ganuza2000,
	title = {Heterogeneity-promoting optimal procurement},
	author = {Juan-Jose Ganuza and Lambros Pechlivanos},
	journal = {Economics Letters},
	month = {Apr},
	number = {1},
	pages = {105--112},
	url = {http://www.sciencedirect.com/science/article/B6V84-3YHG85J-K/2/637b259e0e9712a889c078ea1209efa1},
	volume = {67},
	year = {2000},
	biburl = {http://www.bibsonomy.org/bibtex/2fe1cd74878dd024d4706353e85202aa7/smicha},
	description = {Economics Letters},
	keywords = {Horizontal differentiation }
}