Topological Shoelace Double Knot
December 2017 – Archimedes Lab Project
Ian's Shoelace Site – Double Knot Feedback
Ian's Shoelace Site which shows how to tie shoelaces that can not be unveiled by illustration. - GIGAZINE
Tie Your Shoes WITHOUT a double knot!
2 Bridges Review by Kate Falvey - Issuu
Personal Magic - Viajar na Matemática
Tying your shoes: Double knot without double knotting them
How to 'magically' untie a shoelace double knot – Archimedes Lab Project
Why your shoelaces are always coming untied - Futurity
How to Tie Double Knots That Untie Easily