1. Survey Pegs Computer Downtime Costs at $4 Billion;Ballou;Computerworld,1992
2. User Delay Costs and Internal Pricing for a Service Facility;Dewan;Management Science,1990
3. Analysis of Economics of Computer Backup Service;Freimer;IEICE Transactions on Communications,1992
4. Queuing Methods for Services and Manufacturing;Hall,1991
5. Hot Sites Turn Up the Heat on America;Mason;Computerworld,1990