Tib.Pk
The Tibetan Tripitaka: Peking Edition 影印北京版西藏大藏经, ed. Daisetz T. Suzuki, 168 vols, repr. under the Supervision of Otani University, Kyoto, Tokyo 1955~1961: Tibetan Tripitaka Research Institute. The Tibetan translation of the Aṣṭasāhasrikā Prajñāpāramitā is to be found in vol. 21, pp. 57~183, i.e. No.734, Sher phyin, mi 1b1~312a8.