Scandinavian Congress of Mathematicians, 13. Congrès des Mathématiciens Scandinaves, 13. Helsinki, 1957. 

 - [1st ed.] 
 - Helsingfors:  Mercators Tryckeri,  1958. 
 - 208 p. 
<br/><br/><label>Dewey Class. No.: </label>cs