Foundations of potential theory / 
Oliver Dimon Kellogg 
 - Berlin :  Springer-Verlag,  1967 
 - ix, 384 p. :  ill. ;  24 cm. 
<br/><br/> Reprint of the 1929 ed. 
<br/><br/>Bibliography: p. 377-378 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Potential, Theory of