Egorov ,Yu.V. <br/><br/>
Foundations of The Classical Theory of Partial Differential Equations 
/ by Yu.V. Egorov & M.A. Shubin 
 - New York:  Springer Verlag Berlin Heidelberg,  1988. 
 - 259p. 
<br/><br/><label>ISBN: </label>9783540638254 
<br/><br/><label>Dewey Class. No.: </label>515.353  / EGO/F