. . . . "R. Sankaranarayanan"@en . . "Sankaranarayanan"@en . "Rā" . "R Sankaranarayanan" . "R."@en . "Rā Caṅkaranārāyaṇan̲" . "Rā Caṅkaranārāyaṇan̲" . "R" . . "Caṅkaranārāyaṇan̲" .