Dwiyanti, G., F. Fitriani, and A. Faisol. “THE IMPLEMENTATION OF A ROUGH SET OF PROJECTIVE MODULE”. BAREKENG: Jurnal Ilmu Matematika Dan Terapan, Vol. 17, no. 2, June 2023, pp. 0735-44, doi:10.30598/barekengvol17iss2pp0735-0744.