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In page Tibetan Buddhism:

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Also of great importance are the "Five Treatises of Maitreya" including the influential Ratnagotravibhāga, a compendium of the tathāgatagarbha literature, and the Mahayanasutralankara, a text on the Mahayana path from the Yogacara perspective, which are often attributed to Asanga. Practiced focused texts such as the Yogācārabhūmi-Śāstra and Kamalaśīla's Bhāvanākrama are the major sources for meditation.[citation needed]