est. by bre ston 'bum lha 'bar/ Roerich 1996 (p. 96)
nel pa paNDi ta grags pa smon lam blo gros/ has brag chung ston pa/; see Uebach 1987 (pp. 140f.), the Tibetan (f. 20b6) reads: yang gra pa'i mkhan bu brag chung ston pa bya bas gra'i sna sgor btab/
yig tshang gsal ba'i me long [ms] (f. 5a4-5): yang gra pa sngon shes kyi slob ma / gra chung ston pas: gra'i sna gro btab/
Kollmar-Paulenz 1993 (pp. 157f.) has grwa ston 'bar/