. "Pierre Perron"@en . . . . . "Canadian econometrician" . "1959Z"^^ . "Perron, Pierre"@en . "Pierre Perron (born March 14, 1959) is a Canadian econometrician at Boston University. Perron is known for the Phillips\u2013Perron test of a unit root in time series regression, which was the result of his Ph.D. studies under Peter C. B. Phillips."@en . "1959-03-14Z"^^ . . .