Physics of the one- and two-electron atoms / 
edited by F. Bopp and H. Kleinpoppen. 
 - Amsterdam :  North-Holland Publishing Company,  1970. 
 - xiv, 874 pages :  illustrations ;  20 cm. 
<br/><br/>Includes bibliographical references 
<br/><br/><label>ISBN: </label>0720401593 
<br/><br/><label>Subjects--Personal Names: </label><br/>Sommerfeld, Arnold, 1868-1951. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Atoms--Congresses.