The SNIP (source normalized impact per paper) indicator is an indicator of the citation impact of scientific journals. The indicator, introduced by Henk Moed in 2010, is included in Elsevier's Scopus database. The SNIP indicator uses a source normalized approach to correct for differences in...

In this study an analysis of the effects of the different types of durability on the bibliometric performance at the group level is presented. The scientific production during the period of 1991–2000 of a set of 158 Dutch research groups in chemistry is studied considering several bibliometric...

This article presents an analysis of the funding policies of three research councils at the Netherlands Organization for Scientific Research (NWO). The key issue is the extent to which these three councils recognized scientific excellence, and particularly, whether they succeeded in rewarding...

Field normalization, and its effect of bibliometric indicators, is a widely discussed topic among bibliometricians. It is not the necessity of field normalization around which the debate evolves, but how to field normalize bibliometric indicators. In this article we present the results of a...

The crown indicator is a well-known bibliometric indicator of research performance developed by our institute. The indicator aims to normalize citation counts for differences among fields. We critically examine the theoretical basis of the normalization mechanism applied in the crown indicator....

We reply to the criticism of Opthof and Leydesdorff on the way in which our institute applies journal and field normalizations to citation counts. We point out why we believe most of the criticism is unjustified, but we also indicate where we think Opthof and Leydesdorff raise a valid point.