< All references
Iyer, K.A. Subramania (ed.) (1966),
Vākyapadīya with the Vṛtti and the Paddhati of Vṛṣabhadeva.
Poona: Deccan College Postgraduate and Research Institute.
Deccan College Monograph Series 32
The Paddhati of Vṛṣabhadeva (a.k.a. Harivṛṣabha) is a commentary on the first book of the Vākyapadīya.
The Vākyapadīya, a.k.a. Trikāṇḍī, is a set of around 2000 verses, divided in three books, treating the philosophy of Sanskrit grammar/philosophy of language. It is (one of) the most important works...
Bhartṛhari has also written the Mahābhāṣyadīpikā, the oldest partially extant commentary on the Mahābhāṣya. Some also consider Bhartṛhari to be the author of a third work called Ṣaḍdhātusamīkṣā.
Vṛṣabhadeva (a.k.a. Harivṛṣabha) was patronised by king Viṣṇugupta.