Heading, John <br/><br/>
An introduction to phase-integral methods 
J. Heading 
 - London  Methuen  1962 
 - vii, 160 s.  şkl.  20 cm. 
 - Methuen's monographs on physical subjects .
<br/><br/>İndeks : 157-160 ss. Kaynakça : 152-156 ss. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations, Linear--Numerical solutions.<br/>Integrals.<br/>Mathematical physics.
<br/><br/><label>Dewey Class. No.: </label>515.4 HEA 1962