Michaela Chovancova and  Pavel Niedoba,  The Pressure Losses in the Model of Human Lungs.   journal   = {International Journal of Mechanical and Mechatronics Engineering}, [online]. World Academy of Science, Engineering and Technology.
    February 2015, vol. 98(2). 171 - 176
    [viewed 26 January 2020]. Available from: https://publications.waset.org/pdf/10000641.