M. A. Karim,  Performance Evaluation of A Stratified Chilled- Water Thermal Storage System.   journal   = {International Journal of Mechanical and Mechatronics Engineering}, [online]. World Academy of Science, Engineering and Technology.
    May 2009, vol. 29(5). 521 - 529
    [viewed 18 October 2019]. Available from: https://publications.waset.org/pdf/11181.