Mahavairochana-Sutra (Tantra)
http://www.spiritwiki.de/w/mahavairocana_sutra
Tantrische Herz-Sutra Praxis
Hannya shingyō hiken. (般若心經秘鍵), “Secret the Key to the PRAJÑĀPĀRAMITĀHRIDAYA by KŪKAI in Hakeda, Kukai: Major Works, pp. 262-275
Hannya shingyö hiken ryakuchū, by Kakuban, in Kögyó Daishi senjutsushu, part 2, pp. 197–217
24_thomas.pdf
Tantrische Amida-Praxis
Esoteric & Tendai contemplation of Amida - Dharma Wheel