Journal of Applied Mathematics and Stochastic Analysis 7, Number 2, 1994 Erratum A BULK QUEUEING SYSTEM UNDER N-POLICY WITH BILEVEL SERVICE DELAY DISCIPLINE AND START-UP TIME DAVID C.R. MUH Department of Operations Research of Technology Melbourne, FL 3901, USA Florida Institute In the above paper published in the Journal of Applied Mathematics and Stochastic Analysis, 6, Number 4, 359-384, Winter 1993, the below formulas on page 368 appeared to be erroneous. They should read as follows: N N (4.3a) (5.1b) GN i(z) 1{ (z .a(z)--a(x) - x)(1 a(x)) } Z i<N, i>N. HR(h)(z) h(z) + u Printed in the U.S.A. (C)1994 by North Atlantic Science Publishing Company 207