@article{10_1017_S000843950003085X,
     author = {Colton, David},
     title = {Function theoretic methods in partial differential equations, by {Robert} {P.} {Gilbert,} {Academic} {Press,} {New} {York,} 1969. 311 pages. {U.S.} $17.50.},
     journal = {Canadian mathematical bulletin},
     pages = {540--540},
     year = {1969},
     volume = {12},
     number = {4},
     doi = {10.1017/S000843950003085X},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S000843950003085X/}
}