Yousef Abu Nahleh and Alhasan Hakami and Arun Kumar and Fugen Daver, Improving Order Quantity Model with Emergency Safety Stock (ESS). journal = {International Journal of Mechanical and Mechatronics Engineering}, [online]. World Academy of Science, Engineering and Technology. November 2013, vol. 84(12). 2451 - 2456 [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/9996737.