- Anomalieen in de verhalen van Franka van Henk Kuijpers ...www.xs4all.nl/%7Ephilow/frraad00.html
- Anomalies in the stories of Franka, the comic strip of Henk Kuijpers.This is the homepage for a series of articles on the topic.www.xs4all.nl/~philow/frenig00.html