TY - JOUR T1 - Introduction: A Challenge that Financial Markets Have Never Faced Before JF - Practical Applications SP - 1 LP - 2 DO - 10.3905/pa.2015.1.jor.intro VL - 1 IS - JOR AU - Laurence B. Siegel Y1 - 2015/01/31 UR - https://pm-research.com/content/1/JOR/1.7.abstract N2 - ER -