1. Hatha yoga Pradipika;Muktibodhananda,1999
2. Gheranda samhita -: commentary on the yoga teachings of maharshi Gheranda;Saraswati,2012
3. Hatharatnavali (A treatise on Hathayoga of srinivasayogi);Gharote,2003
4. Kunjara - the yogic stomach wash;Yogeshwar;Ancient Sci Life,1992
5. Voluntarily induced vomiting - a yoga technique to enhance pulmonary functions in healthy humans;Balakrishnan;J Ayurveda Integr Med,2018