Gultom, E. O. J., & Lesbani, A. (2017). Synthesis and characterization of metal oxides supported keggin type polyoxometalate Rb2K2[-H2SiV2W10O40].nH2O. Science and Technology Indonesia, 2(2), 50–55. https://doi.org/10.26554/sti.2017.2.2.50-55