1. [1] R.H. Vogel, Inventory management of shipboard material, Master's Thesis, Naval Postgraduate School, 1966.
2. [2] R.G. Iverson, R.D. Fisher and R.F. Wenzel, The growth of a rational, system approach to naval repair parts inventories: The introduction of military essentiality, Master's Thesis, Naval Postgraduate School, 1962.
3. [3] M.E. Quimby, “Upper limits of COSAL performance,” AD/A-110 339, US Navy Report, 1981.
4. [4] R.I. Zequeira and C. Bérenguer, “Periodic imperfect preventive maintenance with two categories of competing failure modes,” Reliab. Eng. Syst. Safe., vol.91, no.4, pp.460-468, 2006.
5. [5] F. Beichelt and K. Fischer, “General failure model applied to preventive maintenance policies,” IEEE Trans. Rel., vol.29, no.1, pp.39-41, 1980.