A model for the analysis of Markovian decision decision processes with unobservable states and unobservable costs / 
James D. Steele 
 - California :  Rand Corporation,  1972 
 - 8 pages ;  28 cm. 
 - The Rand paper series ;  p. 4917 .
 - Rand paper series ;  p. 4917 .
<br/><br/>Bibliography: p. 8