saṁdhyakṣarāṇi saṁspṛṣṭavarṇānyekavarṇavadvṛttiḥ ⃒- Deshpande (1997), a pag.1.1.40
sandhyakṣarāṇāmayavāyāvaḥ ⃒- Deshpande (1997), a pag.3.2.17