@article{Bernstein1988,
	title = {Multiple outputs, adjustment costs and the structure of production
	for Bell Canada},
	author = {Jeffrey I. Bernstein},
	journal = {International Journal of Forecasting},
	number = {2},
	pages = {207--219},
	url = {http://www.sciencedirect.com/science/article/B6V92-45P4FSN-5/1/fcce5d25e19ab9742809465e4d7e1e57},
	volume = {4},
	year = {1988},
	biburl = {http://www.bibsonomy.org/bibtex/2378ab93e844f31f6110c28a0cf09067e/smicha},
	keywords = {Adjustment cost }
}