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Modern Encyclopedia/Reference Work Information:
Ono Genmyō, Bussho kaisetsu daijiten 佛書解說大辭典, 8.256ab, Nishio Kyōo 西尾京雄.
Notes
Although Nishio notes the identification with Madhyamāgama 132 Raṣṭrapāla, he does not identify the sūtra.