International Electrotechnical Commission <br/><br/>
IEC: 60050-191(Amendement 1)- 1999; International Electrotechnical vocabulary - chapter 191: Dependability and quality of service 

 - Geneva  IEC  1999 
 - 1-68 
<br/><br/> Downloaded from IEC Website 
<br/><br/><label>ISBN: </label>2-8318-4312-x 
<br/><br/><label>Universal Decimal Class. No.: </label> /