TY - JOUR T1 - Editor’s Letter JF - The Journal of Trading SP - 1 DO - 10.3905/JOT.2009.4.4.001 VL - 4 IS - 4 A2 - Bruce, Brian R Y1 - 2009/09/30 UR - https://pm-research.com/content/4/4/1.abstract N2 - ER -