. . . . "Wickramasinghe, Chandra"@en . . "Nalin Chandra Wickramasinghe (born 20 January 1939) is a Sri Lankan-born British mathematician, astronomer and astrobiologist."@en . . . "Nalin Chandra Wickramasinghe"@en . . . . . . "1939Z"^^ . . "Astronomer" . "Chandra Wickramasinghe"@en . . . "1939-01-20Z"^^ . .