NASAPDF1928GClifford（gK）XG（gK）XXPandzicGHKostantcubicDiracDiracWeylCillfordGH?Cherlin-ZilberBorisZilber30MorleyCCherlin-Zilber30CBorovikNesinCherlin-ZilberoCCherlinPeterzilPillayStarchenkoP1PnC^2dC1inCPid^2^2++^2