Research Papers used (Sir C V Raman, Vidwan Umayalpuram Sivaraman/Ramaswami, Rahul Siddharthan et. al.)

• Musical drums with harmonic overtones - C V Raman's Nature Paper
• The Indian musical drums - C V Raman's PIAS Paper
• A study of Harmonic overtones in Indian Musical drums - Rahul Siddharthan's Paper
• Science for Musical Excellence - Sivaraman