00343nam a2200121Ia 4500082002300000100002400023245003700047260004800084300001900132490006000151500000500211700000500216  a518.50181bC435.AI  aChaitin, Gregory J.  aAlgorithmic information theoryb  aCambridgebCambridge University Pressc1987  ax, 178p. Bibl.  aCambridge tracts in Theoretical Computer Sciencev no.1  a  a