Professor Soukoulis is one of 1000 physicists who are most cited in the world for the period of 1981-1987.
Total number of citations with citations to the journals and books (only journals):
as of December 31, 2010 17025
as of December 31, 2011 19172
as of December 31, 2012 21615
as of December 31, 2013 23967
as of December 31, 2014 26287
as of December 31, 2015 28470
as of December 31, 2016 30585
Another index to quanitify on individual's scientific research output is the so-called h-index, defined as the number of papers with citation number higher or equal to h. The h-index for Professor Soukoulis is 90, and 93 if his citations to his books are counted.