"A Heteroskedasticity-Consistent Covariance Matrix Estimator and a Direct Test for Heteroskedasticity"@en . "\u043D\u0430\u0443\u043A\u043E\u0432\u0430 \u0441\u0442\u0430\u0442\u0442\u044F, \u043E\u043F\u0443\u0431\u043B\u0456\u043A\u043E\u0432\u0430\u043D\u0430 \u0432 \u0442\u0440\u0430\u0432\u043D\u0456 1980"@uk . . . "wetenschappelijk artikel"@nl . "article scientifique publi\u00E9 en 1980"@fr . . . . . "220019930" . . . "1912934" . "14361057996518706833" . . "A Heteroskedasticity-Consistent Covariance Matrix Estimator and a Direct Test for Heteroskedasticity"@en . . . "art\u00EDculu cient\u00EDficu espubliz\u00E1u en 1980"@ast . "A Heteroskedasticity-Consistent Covariance Matrix Estimator and a Direct Test for Heteroskedasticity"@nl . "10.2307/1912934" . "22"^^ . . . "48" . . "A Heteroskedasticity-Consistent Covariance Matrix Estimator and a Direct Test for Heteroskedasticity"@en . . "scientific article published in 1980"@en . "817-838" . "A Heteroskedasticity-Consistent Covariance Matrix Estimator and a Direct Test for Heteroskedasticity"@nl . "1980-05-01T00:00:00Z"^^ . "0459.62051" . . . . "4" . "A Heteroskedasticity-Consistent Covariance Matrix Estimator and a Direct Test for Heteroskedasticity"@nl . "A Heteroskedasticity-Consistent Covariance Matrix Estimator and a Direct Test for Heteroskedasticity"@en . . . . . .