Singh, P., A. Jelani, N. Sharma, and A. Kapoor. “A Review of Current Heart Failure Apps”. Journal of the International Society for Telemedicine and EHealth, Vol. 6, no. 1, Nov. 2018, pp. e18 (1-7), https://journals.ukzn.ac.za/index.php/JISfTeH/article/view/539.