Widada, Wahyu. “METODE TRACKING KECEPATAN ROKET MENGGUNAKAN TRANSPONDER DOPPLER DUA-FREKUENSI (ROCKET SPEED TRACKING METHOD USING TWO-FREQUENCY DOPPLER TRANSPONDER)”. Indonesian Journal of Aerospace 11, no. 1 Juni (December 20, 2013): 59–66. Accessed December 6, 2025. https://ejournal.brin.go.id/ijoa/article/view/12314.