Schechter, Martin <br/><br/>
Spectra of partial differential operators 
by Martin Schechter 
 - 2nd  ed. 
 - Amsterdam  North-Holland  c1986 
 - xiii,310p.; 22cm.- 
 - North-Holland series in applied mathematics and mechanics;no.14 .
<br/><br/><label>Dewey Class. No.: </label>515.724  / SCH