00346nam a2200121Ia 4500020001800000082002600018100002100044245007400065260004800139300002700187500000500214700000500219  a9780691135052  a330.0151923bSt874.EI  aStokey, Nancy L.  aThe economics of inactionbstochastic control models with fixed costs  aPrincetonbPrinceton University Pressc2009  aix, 308p. Bibl. Index.  a  a