00346nam a2200121Ia 4500082002200000100001800022245006800040260003600108300002700144490004300171500000500214700000500219  a519.231bAl364.PA  aAldous, David  aProbability approximations via the poisson clumping heuristicb  aNew YorkbSpringer-Verlagc1989  axv, 269p. Index, Bibl.  aApplied Mathematical Sciences v v. 77  a  a