Schwinger, Julian <br/><br/>
Quantum kinematics and dynamics. 

 - New York :  W.A. Benjamin,  1970. 
 - 377 p. 
 - Frontiers in physics .
 - Frontiers in physics .
<br/><br/> Contiene reprints de: Proceedings of the National Academy of sciences v.48[4] Apr.1962: pp.603-611; J. of Mathematical phys. v.2 [1961]: pp.407-432; J. Mathematical Phys. v.5 [1964]: pp. 1606-1608