00308nam a2200121Ia 4500082001900000100001800019245005000037260003400087300001600121490003900137500000500176700000500181  a519.2bC139.BD  aCajar, Helmut  aBillingsley dimension in probability spacesb  aBerlinbSpringer-Verlagc1981  a104p. Index  aLecture notes in Mathematicsv 892  a  a