PCA of PCA: principal component analysis of partial covering absorption in NGC 1365DOI: info:10.1093/mnras/stu712v. 4411817–1824
Parker, M. L., Walton, D. J., Fabian, A. C., and Risaliti, G. 2014. "PCA of PCA: principal component analysis of partial covering absorption in NGC 1365." Monthly Notices of the Royal Astronomical Society, 441 1817–1824. https://doi.org/10.1093/mnras/stu712.