WASET
    Young-Su Ryu and  Won-Gi Jeon and  Byoung-Chul Song and  Jae-Hong Park and  Ki-Won Kwon,  Design of Open Framework Based Smart ESS Profile for PV-ESS and UPS-ESS.   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2017, vol. 123(3). 273 - 276
    [viewed 29 March 2024]. Available from: https://publications.waset.org/pdf/10006598.