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Padhil, A.; Ahmad, A.; Arman, M.; Ramadhan Saputra Ramlan, M. D. R.; Indratma, R.; Lestari, N. D. Re-Designing Conventional Face Mask by Using Triz (Teoriya Resheniya Izobreatatelskikh Zadatch) Method. j. of manag. sci. & eng. res. 2021, 4, 1-7.