Sakita, B. <br/><br/>
Quantum theory of many-variable systems and fields 
B. Sakita 
 - Singapore :   World Scientific,   1985 
 - 217 pages;   24 cm. 
<br/><br/><label>ISBN: </label>9917978555 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Quantum field theory.<br/>Statistical mechanics.<br/>Perturbation (Quantum dynamics).