Grub paʼi dbaṅ phyug chen po Lcags zam pa Thaṅ stoṅ rgyal poʼi rnam thar ṅo mthar kun gsal nor buʼi me loṅ gsar pa : a biography of Thaṅ-stoṅ-rgyal-po Brtson-ʼgrus-bzaṅ-po, the maker of iron bridges - ʼGyur-med-bde-chen, Lo-chen, b. 1540 (Kandro, 1976)