Naimark, M. A. <br/><br/>
Linear differential operators / 
 Linear Differantial Operators in Hilbert Space. 
M. A. Naimark ; translated by E. R. Dawson, English translation edited by W. N. Everitt. 
 - volumes <v.2> :  illustrations ;  23 cm 
<br/><br/> Linear Differantial Operators in Hilbert Space.  P.art 2. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations, Linear
<br/><br/><label>LC Class. No.: </label>QA372  / .N35613 1968