References
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- Zhixing Tian, Bong-Young Kim and Myung-Jin Bae, "A study on Healthy Breathing Pattern when wearing a mask," International Journal of Engineering Research and Technology. Volume 13, Issue 7, pp. 1562-1566, 2020. https://doi.org/10.37624/IJERT/13.7.2020.1562-1566
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