Helārāja

The Saṃbandha-samuddeśa (chapter on relation) and Bhartṛhari's philosophy of language : a study of Bhartṛhari Saṃbandha-samuddeśa in the context of the Vākyapadīya : with a translation of Helārāja's commentary Prakīrṇa-prakāśa

Jan E. M. Houben, Bhartr̥hari, Helārāja, 1995 .