%0 Journal Article %A GRANT, MARK %T ON SELF-INTERSECTION INVARIANTS %J Glasgow mathematical journal %D 2013 %P 259-273 %V 55 %N 2 %U http://geodesic.mathdoc.fr/articles/10.1017/S0017089512000481/ %R 10.1017/S0017089512000481 %F 10_1017_S0017089512000481