Prof. Dr. Henner Hollert is an expert in his field of self citation. He is able cite himself 48 times out of 180 references in this review article:
Hollert, H. , Ernst, M., Ahlf, W., Dürr, M., Erdinger, L., Grund, S., Keiter, S., Kosmehl, T., Seiler, T.-B, Wölz, J., Braunbeck, T. Strategies for assessing sediment toxicity – A review ( Review ) [Strategien zur Sedimentbewertung – Ein Überblick]. Umweltwissenschaften und Schadstoff-Forschung Volume 21, Issue 2, April 2009, Pages 160-176
He is the editor of Journal of Soils and Sediments and also Environmental Science and Pollution Research. he likes to publish editorial to boost the journal’s citation
In 2007, he published:
Hollert, H., Hecker, M., Steinberg, C.E.W., Young, A.L. ESPR’s total environment. 2007. Environmental Science and Pollution Research 14 (1 SPEC. ISS.) , pp. 1-2
with 24 references, all to the same journal.
Hecker, M., Hollert, H. Effect-directed analysis (EDA) in aquatic ecotoxicology: State of the art and future challenges (Editorial) 2009. Environmental Science and Pollution Research 16 (6) , pp. 607-613
Killing 2 birds with one stone, this editorial has 77 References, 22 to Journal of Soils and Sediments and 17 to Environmental Science and Pollution Research.