"Cited-by" added

A "Cited-by" function has now been added at our site. A new block has been added in each article's abstract page (under the copyright statement and next to the reference list). Inside this block, you may see a list of papers from within Crossref that cite this particular article. For more information on this service you can visit the related Crossref page. In short, only papers that are registered in Crossref (have a DOI) are listed in this block and only if the publishers wish to join and enable this service. However, it is both a service and an obligation. This means that not only do the cited-by lists appear in our site, but our articles are now also included in the cited-by lists of other journals that provide this service.