www.designboom.com/art/hans-kotter-limitless-light-sculptures-at-designmiami-basel-2012

www.ignant.de/2012/08/08/hans-kotter/?lang=de

www.artameriquelatine.com

www.patrickheide.com

www.galerie-klaus-benden.de

www.borusancontemporary.com

http://www.gazette-drouot.com

www.debuckgallery.com

www.candyandcandy.com/#/2012/limitless-light-sculptures-by-hans-kotter/

www.patrickheide.com