Tian K, Endo M, Urata M, Mouri K, Yasuda T. Multi-viewpoint Smartphone AR-based Learning System for Solar Movement Observations. Int. J. Interact. Mob. Technol. [Internet]. 2014 Jun. 8 [cited 2024 Apr. 26];8(3):pp. 11-18. Available from: https://online-journals.org/index.php/i-jim/article/view/3731