. . "Rappal S. Krishnan" . "R. S. Krishnan" . "Rappal" . "R.S. Krishnan"@nl-NL . "Rappal Sangameswara Krishnan" . "Krishnan, R. S. (Rappal Sangameswara)" . "R.S Krishnan" . "S." . "Krishnan" . "R." . . . "R.S" . . . "Sangameswara" .