Ullah, Sehat, Inam ur Rahman, and Sami ur Rahman. “Systematic Augmentation of Artoolkit Markers for Indoor Navigation and Guidance: Systematic Augmentation of ARToolkit Markers for Indoor Navigation and Guidance”. Proceedings of the Pakistan Academy of Sciences: A. Physical and Computational Sciences 56, no. 1 (March 31, 2021): 1–8. Accessed September 21, 2024. http://ppaspk.org/index.php/PPAS-A/article/view/145.