When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
By Ivan Straskraba, Antonín Novotny. Antonín Novotný is Senior Researcher at the Laboratoire ANAM, Université de Toulon et du Var in France.; Ivan Straskraba is a Senior Research Scientist at the Mathematical Institute of the Academy of Sciences in the Czech Republic.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.