@article{10_4171_ifb_51,
     author = {Lishang Jiang},
     title = {Analysis of pricing {American} options on the maximum (minimum) of two risk assets},
     journal = {Interfaces and free boundaries},
     pages = {27--46},
     year = {2002},
     volume = {4},
     number = {1},
     doi = {10.4171/ifb/51},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/ifb/51/}
}