Guozhen Li and  Philip Hall and  Nick Miles and  Tao Wu,  Optimization of a Four-Lobed Swirl Pipe for Clean-In-Place Procedures.   journal   = {International Journal of Environmental and Ecological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2015, vol. 102(6). 711 - 719
    [viewed 19 April 2024]. Available from: https://publications.waset.org/pdf/10001567.