Mahdi Asghari,  Investigation about Mechanical Equipment Needed to Break the Molecular Bonds of Heavy Oil by Using Hydrodynamic Cavitation.   journal   = {International Journal of Energy and Power Engineering}, [online]. World Academy of Science, Engineering and Technology.
    September 2020, vol. 166(10). 298 - 304
    [viewed 24 May 2022]. Available from: https://publications.waset.org/pdf/10011506.