Maramba Meha, Engelia, Windarjoto, Windarjoto, AND Suyanto, Hery. " Spectra FTIR Analysis of Kedondong and Pumpkin Fruits, Sweet Potato and Carrot for Choosing Dye Sensitized Solar Cell (DSSC) Materials Using Multivariate Method" BULETIN FISIKA [Online], Volume 23 Number 2 (16 August 2021)