Iacone, F, Nielsen, M Ø & Taylor, R 2022, ' Semiparametric tests for the order of integration in the possible presence of level breaks ', Journal of Business and Economic Statistics, vol. 40, no. 2, pp. 880-896 . https://doi.org/10.1080/07350015.2021.1876712
Cavaliere, G, Nielsen, M Ø & Robert Taylor, A M 2022, ' Adaptive Inference in Heteroscedastic Fractional Time Series Models ', Journal of Business and Economic Statistics, vol. 40, no. 1, pp. 50-65 . https://doi.org/10.1080/07350015.2020.1773275