References

RRÅ, V.kh., 10, 59.2
  indragopaṃ ghanaṃ śigru sūraṇaṃ vanasūraṇam //Context
RRÅ, V.kh., 2, 16.2
  kaṭutumbī vajralatā sūraṇaṃ vanasūraṇam //Context