@article{10_4171_ifb_219,
     author = {Kenneth Hvistendahl Karlsen and Olli Wallin},
     title = {A semilinear equation for the {American} option in a general jump market},
     journal = {Interfaces and free boundaries},
     pages = {475--501},
     year = {2009},
     volume = {11},
     number = {4},
     doi = {10.4171/ifb/219},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/ifb/219/}
}