References

BhPr, 1, 8, 119.2
  darduraṃ tvagninikṣiptaṃ kurute darduradhvanim //Context
RCūM, 10, 6.1
  nāgābhraṃ nāgavatkuryāt dhvaniṃ pāvakasaṃsthitam /Context
RRĂ…, R.kh., 6, 4.2
  darduro nihito hyagnau kurute darduradhvanim //Context
RRS, 2, 6.1
  nāgābhraṃ nāgavatkuryāddhvaniṃ pāvakasaṃsthitam /Context