Patentschrift:

https://web.archive.org/web/20241201125609/https://www.vereinwir.ch/spinnenfaeden/#flipbook-252410/1/

https://register.epo.org/application?number=EP05755997&tab=main

Website

https://www.vereinwir.ch

Archive.org

https://web.archive.org/web/20241201145821/https://www.vereinwir.ch/die-mysterioesen-faeden-harmlos-oder-der-beginn-eines-experiments/