A note on unknotting number . Unknotting numbers and their minimal knot diagrams . A Survey of Knot Theory . The Theory of Partitions . Combinatorial cubings, cusps and the dodecahedral knots .
Borromean circles are impossible .
Borromean triangles in Viking art . Symmetrical combinations of three and four hollow triangles . On Boromean links . On knots . The classification of alternating links .