References

RRÅ, V.kh., 4, 24.2
  dviguñjāmātrakarpūrair yantragarbhaṃ pralepayet //Context
RRÅ, V.kh., 9, 42.1
  karṣaikaṃ drutasūtasya hyaṣṭaguṃjaṃ tu hāṭakam /Context
RRÅ, V.kh., 9, 42.2
  caturguṃjaṃ mṛtaṃ vajraṃ haṃsapādyā dravairdinam //Context