"Extracted from the book, Heart of wisdom written by Venerable Geshe Kelsang Gyatso Rinpoche"_Colophon.
The Great Mother : a method to overcome hindrances and obstacles by reciting the essence of wisdom sutra (the heart sutra) by Kelsang Gyatso. Published by Tharpa in 2001. Publication and catalogue information, links to buy online and reader comments.