Beanland, Kevin, and Ryan Causey. “Quantitative Factorization of Weakly Compact, Rosenthal, and $\xi$-Banach-Saks Operators”. MATHEMATICA SCANDINAVICA 123, no. 2 (September 5, 2018): 297-319. Accessed May 21, 2019. https://www.mscand.dk/article/view/105124.