%0 Journal Article %A Colton, David %T Function theoretic methods in partial differential equations, by Robert P. Gilbert, Academic Press, New York, 1969. 311 pages. U.S. $17.50. %J Canadian mathematical bulletin %D 1969 %P 540-540 %V 12 %N 4 %U http://geodesic.mathdoc.fr/articles/10.1017/S000843950003085X/ %R 10.1017/S000843950003085X %F 10_1017_S000843950003085X