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In 2007 H. Vermeulen published one dissertation. In 2009 H. Vermeulen published six articles, published one annotation and published one book - monograph . In 2010 H. Vermeulen published twelve articles, published four chapters, gave three lectures, published one contribution newspaper or weekly magazine and published one book - monograph . In 2011 H. Vermeulen published twelve articles and gave three lectures. In 2012 H. Vermeulen published five articles, published five chapters, published four book - monograph s, gave three lectures and published two conference proceedingss. In 2013 H. Vermeulen gave fifteen lectures, published eight articles, published five chapters and published one book editorship. In 2014 H. Vermeulen published thirteen articles, gave eleven lectures, published one chapter and gave his / her inaugural address. In 2015 H. Vermeulen published six articles, published three chapters, published one book editorship and gave one lecture.