Source: Web of Science with the following term: van ijzendoorn mh : 409 papers, 17,948 citations, H-index=64 (August 18, 2016).
Source: Harzing’s Publish or Perish with the following terms: “marinus van ijzendoorn” OR “mh ijzendoorn”: 43,253 citations, H-index=96 (August 18, 2016)
Listed as Highly Cited Researcher in Psychology/Psychiatry 2016 by Thomson Reuters
“Highly Cited Researchers present more than 3,000 authors in 21 main fields of science and the social sciences. These researchers earned the distinction by writing the greatest numbers of reports officially designated by Essential Science Indicators as Highly Cited Papers—ranking among the top 1% most cited for their subject field and year of publication—between 2004 and 2014.” (Thomson Reuters).