- edp sciences12
- elsevier bv12
- american chemical society11
- optica publishing group8
- taylor & francis ltd6
- aarhus univ, aarhus, denmark.5
- ain shams univ, cairo, egypt.;int socioecon lab, new york, ny usa.5
- amer univ beirut, beirut, lebanon.5
- bezirkskrankenhaus straubing, straubing, germany.5