Gerald, Williams <br/><br/>
understanding boundary value problems, wely functions and differential operations .  

 - New York  Murphy & Moore publishing  2021 
 - vii,272p   :  ill.   ; 21cm 
 -  volume2 .
<br/><br/>includes bibliographic and index  
<br/><br/><label>ISBN: </label>9781639875481 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Boundary value problem<br/>Boundary value problem- Weyl theory<br/>Differential operators,<br/>Differential questions
<br/><br/><label>LC Class. No.: </label>QA379.U53