Laakkonen, Helinä and Lanne, Markku (2008): Asymmetric News Effects on Volatility: Good vs. Bad News in Good vs. Bad Times. Unpublished.
Laakkonen, Helinä and Lanne, Markku (2009): The Relevance of Accuracy for the Impact of Macroeconomic News on Volatility. Unpublished.
