Dear Mr.Gantsen: Here is at least one source where RAmAnuja rejects the view that all is consciousness, implying thereby that things do exist independently of consciousness. The source is ShribhAShya II:2:26-29. In II:2:26 RAmAnuja provides the YogAcAra view as the PUrvapakSha and in II:2:27-29 he refutes that view. Regards, B.N.Hebbar