Egorov, Yu.V & Shubin, M.A (eds) <br/><br/>
Partial differential equations I  foundations of the classical theory 
Ed by Yu.V. Egorov & M.A. Shubin 
 - Berlin  Springer  1992 
 - 259 
 - Encyclopaedia of mathematical sciences 30 .
<br/><br/><label>ISBN: </label>0387520023 
<br/><br/><label>Dewey Class. No.: </label>10.02  / EGOR