TY - JOUR AU - Kenneth Hvistendahl Karlsen AU - Olli Wallin TI - A semilinear equation for the American option in a general jump market JO - Interfaces and free boundaries PY - 2009 SP - 475 EP - 501 VL - 11 IS - 4 UR - http://geodesic.mathdoc.fr/articles/10.4171/ifb/219/ DO - 10.4171/ifb/219 ID - 10_4171_ifb_219 ER -