N. E. Variant Anna, D. Dessy Harisanty, D. Puspitasari Srirahayu, E. Endang Fitriyah Mannan, and M. Sua’daa Irfana, “Developing Information Services for Visually-Impaired Students in Indonesia”, IJET, vol. 7, no. 3.7, pp. 215–219, Jul. 2018, doi: 10.14419/ijet.v7i3.7.16354.