@article{EJDE_2010__2010__a3,
     author = {Sun,  Ziqi},
     title = {An inverse boundary-value problem for semilinear elliptic equations},
     journal = {Electronic journal of differential equations},
     year = {2010},
     volume = {2010},
     zbl = {1189.35380},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2010__2010__a3/}
}