Sarkar, Anil Kumar.  The Mysteries of Vajrayana Buddhism: From Atisha to Dalai Lama. New Delhi: South Asian Publishers, 1993.

Abstract

This book, on Vajrayana Buddhism of India and Tibet from Atisha to the present Dalai Lama claims to develop Buddhism from the early Hinayana to the final Tantra-Vajrayana process. The Vajrayana Buddhism as initiated in Tibet by Atisha, utilizes further the mystic-psychic disciplines of the post-Nagarjunite Madhyamika currents from Sarhara and Tilopa of India, to Marpa and Milarespa of Tibet, since the ninth century. It stretches its fangs to the present century. This development, with a dual control of the psychic and cosmic principles, accounts for the emergence of efficient personalities or Adepts (Siddhas) of transcendental Psychology, from the stage of Atisha's immediate pupil Dromponpa, to Gompopa of the twelth century. Their cumulative influence is felt in parallel schools of Lamaite movements - Tulkas, Rinponches, and Dalai Lamas, through the centuries. They manifest a peaceful coexistence, and propagate Universal Peace and Prosperity for mankind, closing the doors of wars that emerge from mere empirically oriented psychology and science.