Alexandria, VA, 2013-05-23 — /travelprnews.com/ — The Global Business Travel Association (GBTA), the voice of the global business travel industry, today announced the speakers for the ‘Luminaries of Travel CEO Panel’ to be held on Tuesday, August 6, 2013, during the GBTA Convention 2013 in San Diego, California.  Philip Wolf, founder and retired chairman, PhoCusWright, will moderate… Read the full press release