The Aṇuvyākhyāna is a Sanskrit work regarding Dvaita philosophy written by Madhvacharya. It is a metacommentary on the author's own commentary on the Brahma Sutras. The other three works on Sutras are
Brahma Sutra Bhashya, Anu Bhashya, and Nyayavivarana.[1] The Anuvyakyana is a work elucidating this commentary with scholarly and philosophical dissertations and criticisms of other schools especially the Advaita of Adi Shankara and the Vishistadvaita of Ramanuja.[2]
Sharma, B. N. Krishnamurti (2000). A History of the Dvaita School of Vedānta and Its Literature, Vol 1. 3rd Edition. Motilal Banarsidass (2008 Reprint). ISBN978-8120815759.