Elliptic Partial Differential Equations of Second Order

From the reviews:<br>This is a book of interest to any having to work with differential equations either as a reference or as a book to learn from. The authors have taken trouble to make the treatment self-contained. It (is) suitable required reading for a PhD student. Although the material has been developed from lectures at Stanford it has developed into an almost systematic coverage that is much longer than could be covered in a year's lectures. <i>Newsletter New Zealand</i> <i>Mathematical Society 1985</i> <br> ... as should be clear from the previous discussion this book is a bibliographical monument to the theory of both theoretical and applied PDEs that has not acquired any flaws due to its age. On the contrary it remains a crucial and essential tool for the active research in the field. In a few words in my modest opinion ���. . . this book contains the essential background that a researcher in elliptic PDEs should possess the day s/he gets a permanent academic position. . . .���  SIAM Newsletter<br>