1. 2 billion consumers worldwide to get smart(phones) by 2016. (2014). eMarketer. Retrieved from: http://www.emarketer.com/Article/2-Billion-Consumers-Worldwide-Smartphones-by-2016/1011694
2. User experience evaluation of mobile spiritual applications for older people: An interview and observation study.;N. A.Ahmad;Journal of Theoretical & Applied Information Technology,2015
3. Monitoring prayer using mobile phone accelerometer.;R.Al-Ghannam;International conference on cloud computing,2015
4. Antunes, A., & Amaro, S. (2016). Pilgrims’ acceptance of a mobile app for the Camino de Santiago. In Information and communication technologies in tourism 2016 (pp. 509-521). Bilbao, Spain: Springer International Publishing.
5. Mobile religiosity in Indonesia: Mobilized Islam, Islamized mobility and the potential of Islamic techno nationalism;B.Barendregt;Living the Information Society in Asia,2009