1. 1. Kati Anneli Kannisto ; Marita Hannele Koivunen ; Maritta Anneli Välimäki “Use of Mobile Phone Text Message Reminders in Health Care Services: A Narrative Literature Review” Vol 16, No 10 (2014): October
   2. H.ELKamchouchi,Ahmed ElShafee,”Design and prototype implementation of SMS based home automation system”, 29 April 2013
   3. Jordan A Wong, Linh Thuy Dang, Ngoc Tran Phan, “Telemedicine and ehealth”,April 2021
   4. Dnyanesh Rajpathak, “Intelligent Scheduling -- A Literature Review”, January 2001