Über einige CG-ähnliche Verfahren zur Lösung linearer Gleichungssysteme. - Roland Freund (1983)

Fast secant methods for the iterative solution of large nonsymmetric linear systems. - Peter Deuflhard; Roland Freund; Artur Walter (IMPACT Comput. Sci. Eng., 1990)

Special Section: 2010 Copper Mountain Conference. - Ray Tuminaro; Michele Benzi; Xiao-Chuan Cai; Iain Duff; Howard C. Elman; Roland Freund; Kirk E. Jordan; Tim Kelley; David E. Keyes; Misha Elena Kilmer; Sven Leyffer; Tom Manteuffel; et al. (SIAM J. Sci. Comput., 2011)