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Paper Catenary
Can a square wheel roll smoothly on a bumpy road? - Quora
How To Make a Rolling Square with Catenary Curves
Thinking With My Hands: Let's do some exploring along The Catenary Trail
BICYCLE WITH SQUARE WHEELS Enjoying Mathematics by Rajnish Kumar
Catenary - Wikiquote
Square Wheels: Engineering & Design Science Activity
Incorporating 'Cat Curves' into tarps/shelters - Backpacking Light
Catenary curve of double bearing support shafting.
Square-wheel Tricycle – TAMU Physics & Astronomy
Things That Go: Square Wheels
Catenary -- from Wolfram MathWorld
Jellyfish Report: 2017