See also "T182: Ngog Kagyu":https://sakyaresearch.org/topics/182
dpyad rtsom brgya dang brgyad cu ma [2016] (pp. 441-446)
Fermer 2022 (pp. 114-119)
for sources on the rngog family lineage, cf. "Rngog Family Sources, Dan Martin, Tiblical":https://sites.google.com/site/tiblical/rngog-family-sources (accessed: 2017-09-25)
"The rNgog clan had originally settled in yar 'brog do" [= yar 'brog do/] Sørensen & Hazod 2007 (p. 175 n. 423); cf. also Roerich 1996 (p. 324) Van der Kuijp 1983 (p. 29)
ming mdzod [1992] (p. 1551.2-5): dgu khri thog sgra dang / rngog dpal gsum sgra che/ rngog rgyal to re rgyal rnams kyis blon po mdzad cing dam pa'i chos la gtsigs su 'dzin nas gtsug lag khang sogs bskyar bzhengs mdzad/