Dol,A <br/><br/>
Lecture Notes in Mathematics 
by A. Dol 
 - new york  Van Nostrand reinhold company  1979 
 - 392p. 
<br/><br/><label>ISBN: </label>3-540-09717-1 
<br/><br/><label>Dewey Class. No.: </label>511.4  / WUY/L