@book{644916e6512444c0b617ec89b1f2c3d2,
title = "Efficient preconditioners for PDE-constrained optimization problems with a multi-level sequentially semi-separable matrix structure",
keywords = "departmental working papers, Geen BTA classificatie",
author = "Y Qiu and {van Gijzen}, MB and {van Wingerden}, JW and MHG Verhaegen and C Vuik",
note = "ISSN: 1389-6520",
year = "2013",
language = "English",
volume = "Reports of the Department of Applied Mathematics",
publisher = "Delft University of Technology, Faculteit Elektrotechniek, Wiskunde en Informatica",
}