1. Charaka samhita of charaka, vimanasthana; rogabhishagjitiya: chapter 8, verse 16-67,2004
2. Charaka samhita of charaka, vimanasthana; rogabhishagjitiya: chapter 8, verse 4,2004
3. Sushruta samhita of sushruta, sootrasthana; yogyasootriya: chapter 9, verse 4,1999
4. Attention span during lectures: 8 seconds, 10 minutes, or more?;Bradbury;Adv Physiol Educ,2016
5. Note taking: a critical review;Hartley;Program Learn Educ Technol,1978