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2. 2. Astanga hridya- ‘Vidyotini’ Hindi Commentary, Chaumkhamba Prakashan ,Varanasi Sutre sthana 4/1 and 4/16 ,Edition -2007.
3. 3. Charak Samhita-Purvarthe, Chaumkhamba Bhartiya Academy, Sutra sthana 7/3.
4. 4. Concept of Ashru vs. Ashruvega (tear reflex)in ayurveda, Dr. Mamta Mittal, 2017, world journal of Pharmacy and Pharmaceutical sciences.
5. 5. Charak Samhita-Purvarthe, Chaumkhamba Bhartiya Academy, Sutre sthana 7/22.