Subiyanto, Marcel Laverda, Sediono Sediono, Elly Ana, M. Fariz Fadillah Mardianto, and Elly Pusporani. 2023. “Peramalan Harga Gandum Di Tengah Invasi Rusia Ke Ukraina Dengan Pendekatan Intervensi Fungsi Step”. Journal of Mathematics Education and Science 6 (2):167-75. https://doi.org/10.32665/james.v6i2.1824.