Brilliant Article found by me in "Shree RangaNatha Mahimai" in SADAGOPAN.ORG edition.
I have split in 2 parts: part 01 - preambule, dwelling on Upanishadic Karikas and Pramanas of OM VishnuPad Ramanuja Maha Acharya; part 02 - dwells on our very much adored "Shree MahaNarayana-Upanishada".
Sri Raamanuja And Oupanishada-Parama Purushan
by Sri Nrusimha Seva Rasikan,
Oppiliappan Koil Sri.VaradAchAri SaThakOpan
AchArya RaamAnujA recognized Sriman naarAyaNaa as