Fock, V. <br/><br/>
The theory of space, time and gravitation / 
Fock V. 
 - 2d rev. ed. Translated from the Russian by N. Kemmer. 
 - Oxford :  Pergamon Press,  1964 
 - xi, 448 p. ;  26 cm. 
<br/><br/> 'A Pergamon Press book.' 
<br/><br/>p. 441-442. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Relativity (Physics)<br/>Gravitation