Epstein, Saul T. (Saul Theodore). <br/><br/>
The variation method in quantum chemistry / 
by Saul T. Epstein. 
 - New York :  Academic Press,  1974. 
 - ix,276 p. ;  24 cm. 
 - Physical chemistry  vol.33. .
<br/><br/><label>ISBN: </label>0122405501 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Quantum chemistry.<br/>Calculus of variations.