A.  Rahmatulloh, Kurniati, N. Ika, Darmawan, I., Asyikin, A. Zaenal, and Witarsyah, D., ?Comparison of the Effects Stemmer Porter and Nazief-Adriani on the Performance of Winnowing Algorithms for Measuring Plagiarism-?, Journal of Digital Information Management, vol. 18, no. 2, pp. 49-56, 2020.