Rohmah, Siti, et al. “PROTOTIPE ALAT UJI PENGUKUR KETEBALAN KAIN BERBASIS IMAGE PROCESSING”. PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL), vol. 8, Dec. 2019, pp. SNF2019-PA, doi:10.21009/03.SNF2019.02.PA.12.