David L. Mills <br/><br/>
Computer Network Time Synchronization: The Network Time Protocol On Earth And In Space 

 - 2nd ed 
 -   Crc Press  ©2011 
<br/><br/><label>ISBN: </label>9781439814635  430 
<br/><br/><label>Dewey Class. No.: </label>004.62/MIL.2