00480nam a2200217Ia 4500082002000000100001800020245006300038260000900101300000600110490001500116490003000131500000500161856001200166856001200178856001200190856001200202856001200214856001200226856001200238856001200250  a330.183 St925b  aStrotz, R. H.  aTriptych of causal chain systemsbp3p3p3p3p3p3p3p3  c1960  a   vApril 1960  aEconometrica, v.28, no.2   a  d3f3u3  d3f3u3  d3f3u3  d3f3u3  d3f3u3  d3f3u3  d3f3u3  d3f3u3