2390ea1157a5d310VgnVCM100000c2b1d38dRCRDapproved/UMICH/stats/Home/People/Faculty/Faculty PublicationsAsymptotic expansions in boundary crossing problemsf290ea1157a5d310VgnVCM100000c2b1d38d____Asymptotic expansions in boundary crossing problemsKeener, R.M. Woodroofekeener;michaelwAnnals of Probability1511987102-114jjsantosjjsantos1363023122833