ca/wiki/File:8crossings-two-trefoils.png Author AnonMoos Permission (Reusing this file) Other versions See also File:20crossings-four-trefoils-decorative-knot.svg...
toronto.edu/wiki/10_120 at the Knot Atlas site. See also File:8crossings-two-trefoils.svg Self-made graphic, converted from the following Vector PostScript...
