Sigit, Riyanto, Khusnul Danny Rahayu, Putri Nadiyah, Heny Yuniarti, and - Anwar. 2020. “Automatic Detection of Fetal Head and Fetal Measurement on Birth Time Estimation”. International Journal on Advanced Science, Engineering and Information Technology 10 (2):447-54. https://doi.org/10.18517/ijaseit.10.2.8594.