Haryanti, N. H., S. Suryajaya, L. Banowati, M. Rahmah, and A. Safi’i. “MODIFICATION OF PURUN TIKUS (ELEOCHARIS DULCIS) AS A NATURAL FIBER COMPOSITE USING KMnO4 AND NaOH”. Spektra: Jurnal Fisika Dan Aplikasinya, Vol. 6, no. 1, Apr. 2021, pp. 37 -48, doi:10.21009/SPEKTRA.061.05.