1. Beckert , Walter Course notes on Financial Econometrics, Birkbeck University of London 2011 Available at www.ems.bbk.ac.uk/for_students/bsc_FinEcon/fin_economEMEC007U/adf.pdf
2. Post-Earnings-Announcement Drift: Delayed Price Response or Risk Premium?;Bernard;Journal of Accounting Research,1989
3. Berntson , M. “Steps in Significance/Hypothesis Testing Using the Normal Distribution.” Course notes for Introduction to Sociology, Grinnell College 2002 Available at
4. Bollen , Johan Huina Mao Xiao-Jun Zeng “Twitter Mood Predicts the Stock Market,” 2010 Available at