Чеберячко, С., Чеберячко, Ю., Яворська, О., Дерюгін, О., Станіславчук, О. and Наумов, М. 2022. CALCULATION OF PROTECTIVE EFFICIENCY OF FILTER HALF MASKS FOR PROTECTION AGAINST VIRUSES BY COMPUTER MODELING. Modern engineering and innovative technologies. 2, 20-02 (Apr. 2022), 68–89. DOI:https://doi.org/10.30890/2567-5273.2022-20-02-022.