Encyclopedia of inorganic chemistry; V.7  Rho-S 
ed. by R. Bruce King 
 - Chichester  John Wiley and Sons  1994 
 - xxii, 624p. 
<br/><br/><label>ISBN: </label>0471936200 
<br/><br/><label>Dewey Class. No.: </label>546.03  / N94.7 "R"