@article{Lisi1997,
	title = {Is a random walk the best exchange rate predictor?},
	author = {Francesco Lisi and Alfredo Medio},
	journal = {International Journal of Forecasting},
	month = {Jun},
	number = {2},
	pages = {255--267},
	url = {http://www.sciencedirect.com/science/article/B6V92-3SWYBTY-8/1/3eb81fa12cca36de84571172c2184f8d},
	volume = {13},
	year = {1997},
	biburl = {http://www.bibsonomy.org/bibtex/2c8c2387b09852ec749550bc2212a809d/smicha},
	keywords = {Time series }
}