Dkaʼ gnad kyi don gsal bar byed pa Dus kyi me loṅ : a synthetic study of the Prasaṅgika methodology in the interpretation of difficult points in the understanding of Buddhist philosophy - Tshul-khrims-rgya-mtsho, Sgo-maṅ Dge-bśes (Mongolian Lama Guru Deva, 1983)