TY - JOUR AU - Richard McGehee TI - Double collisions for a classical particle system with nongravitational interactions. JO - Commentarii mathematici Helvetici PY - 1981 SP - 524 EP - 557 VL - 56 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/CMH_1981__56_139883/ ID - CMH_1981__56_139883 ER -