References
Bhawaiya: Ethnomusicological Study, Sukhabilasa Barma, Global Vision Publishing House, 2004 
Interactions with Prof. Dipak Roy, Assoc. Prof. Bengali Dept, North Bengal University, Siliguri
Related Information
http://ruchichowdhury.tripod.com/abbasuddin_ahmed.htm, article by Abbasuddin`s daughter

https://youtu.be/sYvUUZ2HsuQ sung by Abbasuddin`s son and Bangladeshi musicologist Mustafa Zaman Abbasi

Bhawaiya : An ethnic wave of North Bengal and North East India :