“In the fifteenth century Rāmachandra, in his Prakriyā-kaumudī, or "Moonlight of Method," endeavoured to make Pāṇini's grammar easier by a more practical arrangement of its matter. Bhaṭṭoji's Siddhānta-kaumudī (seventeenth century) has a similar aim; an abridgment of this work, the Laghu-kaumudī, by Varadarāja is commonly used as an introduction to the native system of grammar. Among non-Pāṇinean grammarians may be mentioned Chandra (about 600 A. D.), the pseudo-Çākaṭāyana (later than the Kāçikā), and, the most important, Hemachandra (12th century), author of a Prākrit grammar.”
Appendix A History of Sanskrit Literature
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Pāṇini 37
ancient Sanskrit grammarianRelated quotes
An Analytical Study of 'Sanskrit' and 'Panini' as Foundation of Speech Communication in India and the World

Source: Word on the Street: Debunking the Myth of "Pure" Standard English
Encyclopedia Britannica in: Panini Indian grammarian http://www.britannica.com/EBchecked/topic/441324/Panini, britannica.com.
Horace Hayman Wilson in: The Vishńu Puráńa: A System of Hindu Mythology and Tradition https://books.google.co.in/books?id=rpVTAAAAcAAJ&pg=PR38, J. Murray, 1840, p. 38.
—Walter Eugene Clark ,.Quoted from Gewali, Salil (2013). Great Minds on India. New Delhi: Penguin Random House.

Introduction, p. 17
Elements of Rhetoric (1828)
“Collection of Eight Chapters”
Prof. George Cardona in: Indo-Aryan languages http://www.britannica.com/EBchecked/topic/286348/Indo-Aryan-languages/74594/Characteristics-of-Old-Indo-Aryan-texts#ref603388, britannica.com., 20 January 2014.
Gazetteer in: Sanskrit literature http://dsal.uchicago.edu/reference/gazetteer/pager.html?objectid=DS405.1.I34_V02_298.gif,The Digital South Asia Library - University of Chicago (dsal.uchicago.edu)
Professor A. L. Basham in: Daya Kishan Thussu Communicating India's Soft Power: Buddha to Bollywood https://books.google.co.in/books?id=Ab_QAQAAQBAJ&pg=PA47, Palgrave Macmillan, 24 October 2013, p. 47.