TY - JOUR AU - GRANT, MARK TI - ON SELF-INTERSECTION INVARIANTS JO - Glasgow mathematical journal PY - 2013 SP - 259 EP - 273 VL - 55 IS - 2 UR - http://geodesic.mathdoc.fr/articles/10.1017/S0017089512000481/ DO - 10.1017/S0017089512000481 ID - 10_1017_S0017089512000481 ER -