1D.N.P.Murthy and E.Ashgarizadeh, Optimal decision making in a maintenance service operation,European Journal of Operational Research, Vol:59, 1999, p259-273.
2I.Djamaludin and D.N.P Murthy ,Warranty and Preventive Maintenance, Journal of Reliability, Vol:8,2001, p89-107.
3N.Jack and D.N.P Murthy, A Servicing Strategy for Items Sold under Warranty, Journal of the Operational Research Society, Vol:52,2001, p 1284~ 1288.