References

RRÅ, V.kh., 12, 85.1
  proktaṃ yathā sugamasādhitapītagaṃdhaṃ kṛṣṇābhrahemarajataṃ sitamabhrakaṃ ca /Context
RRÅ, V.kh., 17, 1.2
  nānāvidhaiḥ sugamasaṃskṛtayogarājaistadvakṣyate paramasiddhikaraṃ narāṇām //Context
RRÅ, V.kh., 8, 144.2
  sugamamapi ca tāraṃ sūtaśulbārayogaiḥ dalam atimalahīnaṃ vārtikānāṃ hitārtham //Context