A Robust Parallel Preconditioner for Indefinite Systems Using Hierarchical Matrices and Randomized Sampling. - Pieter Ghysels; Xiaoye Sherry Li; Christopher Gorman; François-Henry Rouet (IPDPS, 2017)

Matrix-free construction of HSS representation using adaptive randomized sampling. - Christopher Gorman; Gustavo Chávez; Pieter Ghysels; Théo Mary; François-Henry Rouet; Xiaoye Sherry Li (CoRR, 2018)

Robust and Accurate Stopping Criteria for Adaptive Randomized Sampling in Matrix-Free Hierarchically Semiseparable Construction. - Christopher Gorman; Gustavo Chávez; Pieter Ghysels; Théo Mary; François-Henry Rouet; Xiaoye Sherry Li (SIAM J. Sci. Comput., 2019)