There are also two appendixes to which Pāṇini refers: one is the Dhātupāṭha, "List of Verbal Roots," containing some 2000 roots, of which only about 800 have been found in Sanskrit literature, and from which about fifty Vedic verbs are omitted; the second is the Gaṇapāṭha, or "List of Word-Groups," to which certain rules apply. These gaṇas were metrically arranged in the Gaṇaratna-mahodadhi, composed by Vardhamāna in 1140 A.D.
Appendix A History of Sanskrit Literature
“Pāṇini had before him a list of irregularly formed words, which survives, in a somewhat modified form, as the Uṇādi Sūtra. There are also two appendixes to which Pāṇini refers: one is the Dhātupāṭha, "List of Verbal Roots," containing some 2000 roots, of which only about 800 have been found in Sanskrit literature, and from which about fifty Vedic verbs are omitted; the second is the Gaṇapāṭha, or "List of Word-Groups," to which certain rules apply. These gaṇas were metrically arranged in the Gaṇaratna-mahodadhi, composed by Vardhamāna in 1140 A. D.”
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
“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.

“The word hero derives from the root *ser-, from which we also get the word “servant.””
Source: The Boy Crisis (2018), pp. 61
An Analytical Study of 'Sanskrit' and 'Panini' as Foundation of Speech Communication in India and the World

[Re: Real men don't attack straw men, MARC, openbsd-misc (Mailing list), http://marc.info/?l=openbsd-misc&m=119761726816776, 2007-12-14, 2017-04-20]

Book I, Chapter 5.
Books, Coningsby (1844), The Young Duke (1831)