Ragmala Singh Ashok. Rāgmālā Nirṇai. Amritsar, n.d. 3. Surindar Siṅgh Kohli. A Critical Study of Adi Granth. Delhi, 1961 4. Max Arthur Macauliffe. The Sikh Religion: Its Gurus, Sacred Writings and Authors. Oxford, 1909 5. Professor Sahib Singh. About the Compilation of Sri Guru Granth Sahib (Tr. Daljit Singh). Amritsar, 1996 6. Madan Singh. Raag Maala - A Re-appraisal in the Context of Sri Guru Granth Sahib Ji. Amritsar, 2003. 7. Taran Singh. Ragmala. The Encyclopaedia of Sikhism, Vol. III. Ed. Harbans Singh. Punjabi University, Patiala, 1997. P 426. 8. Kavi Santokh Singh. Sri Gur Partap Suraj Granth. https://web.archive.org/web/20080905180746/http://www.ik13.com/Rasses/SGPS%20Raas%203.pdf Ragmala Ragmala
Adi Shankara ("Bhāṣya"), original philosophical expositions ("Prakaraṇa grantha") and poetry ("Stotra"). However most of these are not authentic works of Adi Shankara and are likely to be works of his admirers or scholars whose name was also Shankaracharya. Piantelli has published a complete list of works attributed to Adi Sankara, along with issues of authenticity for most. Adi Shankara is most known for his systematic reviews and commentaries ("Bhasyas") on ancient Indian texts. Shankara's masterpiece of commentary is the "Brahmasutrabhasya" (literally, commentary on Brahma Sutra), a fundamental text of the Vedanta school of Hinduism. His commentaries on ten Mukhya (principal) Upanishads are