ॐ द्रां दत्तात्रेयाय नमः।
This is a comparative study of the yoga methods prescribed in:
- Markandeya Purana [https://archive.org/details/MarkandeyaPuranSanskrit/page/n349/mode/2up],
- Shri Dattatreya Yoga Shastra [https://archive.org/details/znHO_m-1886-yoga-shastra-dattatreya-sankruti-samvad-kavikulguru-kalidas-sanskrit-univ/page/n1/mode/2up, https://sanskritdocuments.org/doc_deities_misc/dattayoga.html, https://archive.org/details/DattatreyaYogaSamhita_201808/mode/2up, https://archive.org/stream/dattatreyatantradr.rudradevtripathi/Dattatreya%20Tantra%20-%20Dr.%20Rudradev%20Tripathi_djvu.txt, https://archive.org/details/kathabodhadattatreyamahaprabhulalgoswamichowkambha_202003_683_v/mode/2up], and
- Shiva Samhita [https://archive.org/details/SivasamhitaWithHindiCommentaryByGoswamiRamcharanPuri/mode/2up, https://archive.org/details/SivaSamhita/mode/2up]
