Husein, A., Izzuddin, A., & Fadhel, M.
(2021).
THE EFFECT OF MAGNETIC DECLINATION CORRECTION ON SMARTPHONES COMPASS SENSORS IN DETERMINING QIBLA DIRECTION.
Al-Hilal: Journal of Islamic Astronomy, 3(2), 43-74.
doi:
https://doi.org/10.21580/al-hilal.2021.3.2.8309