Risteski, Dimche, and Danco Davcev. 2015. “Do Search Engine Data Improve Financial Time Series Volatility Predictions in Different Market Periods? An Empirical Analysis on Major World Financial Indices”. INTERNATIONAL JOURNAL OF COMPUTERS &Amp; TECHNOLOGY 14 (5):5759-68. https://doi.org/10.24297/ijct.v14i5.5275.