Columbia subject headings:
Maitreyanātha. Sekanirdeśa.
Rāmapāla, active 11th century. Sekanirdeśapañjikā.
Tantric Buddhism.
Harvard subject headings:
Advayavajra, active approximately 11th century. Sekanirdeśa.
Rāmapāla, active 11th century. Sekanirdeśapañjikā.
Tantric Buddhism--Early works to 1800.
Princeton subject headings: