An Agglomerate Multilevel Preconditioner for Linear Isostasy Saddle Point Problems. - Erik Bängtsson; Maya G. Neytcheva (LSSC, 2005)

Finite-element based sparse approximate inverses for block-factorized preconditioners. - Maya G. Neytcheva; Erik Bängtsson; Elisabeth Schold Linnér (Adv. Comput. Math., 2011)