Gurgul, Henryk, Łukasz Lach, and Tomasz Wójtowicz. 2017. “Linear and Nonlinear Intraday Causalities in Response to U.S. Macroeconomic News Announcements: Evidence from Central Europe”. Managerial Economics 17 (2):217. https://doi.org/10.7494/manage.2016.17.2.217.