https://sites.google.com/site/cfaugustus/ ::::: https://web.archive.org/web/20091115161911/http://www.polygraphicum.de/refs.html <> https://sites.google.com/site/go0ogindex/archives-polygraphicum

https://sites.google.com/site/cfaugustus/ https://sites.google.com/view/he1m/home

https://sites.google.com/site/cfaugustus/ https://sites.google.com/view/he1m/home https://web.archive.org/web/20091115161911/http://www.polygraphicum.de/refs.html https://sites.google.com/site/go0ogindex/archives-polygraphicum