@article{AIF_1994__44_4_1181_0,
     author = {Vogelius, Michael},
     title = {An inverse problem for the equation $\triangle u=-cu-d$},
     journal = {Annales de l'Institut Fourier},
     pages = {1181--1209},
     publisher = {Association des Annales de l{\textquoteright}institut Fourier},
     volume = {44},
     number = {4},
     year = {1994},
     doi = {10.5802/aif.1429},
     mrnumber = {95h:35246},
     zbl = {0813.35136},
     language = {en},
     url = {http://www.numdam.org/articles/10.5802/aif.1429/}
}