@misc{10_1017_S0008439500029994,
     title = {Linear and quasi-linear elliptic equations, by {O.} {Ladyzhenskaya} and {N.} {Ural'tseva.} {Academic} {Press,} {New} {York,} 1968. xviii + 495 pages. {U.S.} $24.},
     journal = {Canadian mathematical bulletin},
     pages = {101--102},
     year = {1969},
     volume = {12},
     number = {1},
     doi = {10.1017/S0008439500029994},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0008439500029994/}
}