by Walsh, T.F., Reese, G.M., Hetmaniuk, U.L.
Published in Computer methods in applied mechanics and engineering (01.08.2007)

by Hetmaniuk, U. L., Lehoucq, R. B.
Published in SIAM journal on matrix analysis and applications (01.01.2006)

by HETMANIUK, U. L, LEHOUCQ, R. B
Published in SIAM journal on matrix analysis and applications (2007)

by Arbenz, Peter, Hetmaniuk, Ulrich L., Lehoucq, Richard B., Tuminaro, Raymond S.
Published in International journal for numerical methods in engineering (14.09.2005)