From: Frenchy Pilou (PILOU)
Georg Glaeser Konrad Polthier
ed Springer A mathematical picture book 2013
350 pages 1000 images!
Not sure that is always available... but in libraries...
https://moiscript.weebly.com/geacuteomeacutetries-par-bemfarmer.html ;)
Here you can find 50 functions by Bemfarmer! ;)
Maybe a day i will update some numerous other functions by Bemfarmer! :)
Cyclides de Dupin