TY - JOUR AU - Skip Pennock TI - Of Torus and Turk's-Head Knots: A Polar Trigonometric Modeling JO - Visual Mathematics PY - 2004 VL - 6 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/VM_2004_6_4_a3/ ID - VM_2004_6_4_a3 ER -