Antoniadis, Ioannis, Christos Gkasis, and Xanthi Partalidou. 2019. “Insider Trading Patterns in Periods of Financial Crisis: A Study of the Technological Sector of Athens Stock Exchange Market”. International Journal of Economics and Financial Issues 9 (2):241-50. https://mail.econjournals.com/index.php/ijefi/article/view/7635.