Martins, Gary R. <br/><br/>
Implementing message systems in multilevel secure environments :  problems and approaches / 
Gary R. Martins, R. Stockton Gaines ; prepared for the Defense Nuclear Agency. 
 - California :  Rand Corporation,  1982. 
 - vii, 70 p. ;  28 cm. 
 - A Rand note ;  N-1852-DNA .
 - Rand note ;  N-1852-DNA. .
<br/><br/>Includes bibliographical references (p.69-70) 
<br/><br/><label>ISBN: </label> Hadiah 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computers--Access control<br/>Operating systems (Computers)