cf. also g.yo ru/
g.yor po yul dgu/ is mentioned in bstan bcos gyi dkar chag [ms] (p. 457.7) byams gling pa'i rnam thar I_A [ms] (f. 3b)
ming mdzod [1992] (p. 816.18)
on the division of g.yo ru/, cf. bshad mdzod yid bzhin nor bu [1969] (pp. 196.2-197.2) bshad mdzod yid bzhin nor bu [1976] (pp. 206.5-208.1); also Smith 2001 (p. 222)