References
- [ber] Mengenlehreuhr. https://en.wikipedia.org/wiki/Mengenlehreuhr.
- [bin] Binary Clock. https://en.wikipedia.org/wiki/Binary_clock.
- [Pre06] Jörg Pretz. A Different Way to Read Off the Time - A New Idea for a Binary Clock. Journal of Recreational Mathematics, 35(4):27–330, 2006.
- [Pre16] Jörg Pretz. The Triangular Binary Clock. Recreational Mathematics Magazine, 3(5):5–7, 2016.