Siddhaṃ script (English Wikipedia)

Malatesha Joshi, R.; McBride, Catherine (11 June 2019). Handbook of Literacy in Akshara Orthography. ISBN 9783030059774.
"Devanagari: Development, Amplification, and Standardisation". Central Hindi Directorate, Ministry of Education and Social Welfare, Govt. of India. 3 April 1977. Retrieved 3 April 2018 – via Google Books.
Salomon, Richard (1998). Indian Epigraphy. Oxford University Press. ISBN 978-0-19-535666-3.

buddhism-guide.com

"Monier-Williams Sanskrit Dictionary 1899 Basic". www.sanskrit-lexicon.uni-koeln.de. Retrieved 2023-05-24.

Rajan, Vinodh; Sharma, Shriramana (2012-06-28). "L2/12-221: Comments on naming the "Siddham" encoding" (PDF). Retrieved 2014-08-19.
Pandey, Anshuman (2012-08-01). "N4294: Proposal to Encode the Siddham Script in ISO/IEC 10646" (PDF). Working Group Document, ISO/IEC JTC1/SC2/WG2.
Kawabata, Taichi; Suzuki, Toshiya; Nagasaki, Kiyonori; Shimoda, Masahiro (2013-06-11). "N4407R: Proposal to Encode Variants for Siddham Script" (PDF). Working Group Document, ISO/IEC JTC1/SC2/WG2.