Charalambos A. Charalambides, PhD, is Professor Emeritus of mathematical statistics at the University of Athens, Greece, where he has been lecturer, assistant, associate and (full) professor from 1972 to 2010. Dr. Charalambides received a diploma in mathematics (1969) and a PhD in mathematical statistics (1972) from the University of Athens. He was visiting assistant professor at McGill University, Montreal, Canada (1973-74), visiting associate professor at Temple University, Philadelphia, USA (1985-86), and visiting professor at the University of Cyprus, Nicosia, Cyprus (1995-96, 2003-04, 2007-08, 2010-11). Since 1979 he has been elected member of the International Statistical Institute (ISI). His research interests include enumerative combinatorics, combinatorial probability and parametric inference/point estimation.