by Hartwig, Robert E., Patrício, Pedro
Published in Bulletin of the Malaysian Mathematical Sciences Society (01.09.2023)

by Hartwig, Robert E., Wang, Guorong, Wei, Yimin
Published in Linear algebra and its applications (2001)

by Trussell, H.J., Hartwig, R.E.
Published in IEEE transactions on image processing (01.04.2002)

by Poplin, Phillip L, Hartwig, Robert E
Published in Linear algebra and its applications (01.08.2004)

by Hartwig, Robert E.
Published in The American mathematical monthly (01.03.2006)

by Hartwig, Robert E, Maroulas, John
Published in Electronic Journal of Linear Algebra (01.01.2005)

by Chen, Xuzhou, Hartwig, Robert E
Published in Linear algebra and its applications (01.04.1996)

by Hartwig, Robert E., Semrl, Peter
Published in SIAM journal on matrix analysis and applications (1998)

by Mani, Vaidyanath, Hartwig, Robert E.
Published in SIAM journal on matrix analysis and applications (01.01.1995)

by Hartmann, Wolfgang M., Hartwig, Robert E.
Published in SIAM journal on optimization (01.08.1996)

by Hartwig, Robert E, Omladič, Matjaž, Šemrl, Peter, Styan, George P.H
Published in Linear algebra and its applications (01.04.1996)

by Vaidyanath, Mani, Hartwig, Robert E
Published in Electronic Journal of Linear Algebra (01.01.1996)

by Hartwig, Robert E, Drazin, Michael P
Published in Journal of mathematical analysis and applications (1982)

by Hartwig, Robert E.
Published in SIAM journal on applied mathematics (01.07.1976)

by Hartwig, Robert E.
Published in The American mathematical monthly (01.03.2006)

by Bevis, Jean H., Hall, Frank J., Hartwig, Robert E.
Published in SIAM journal on matrix analysis and applications (01.07.1988)

by Hartwig, Robert, Luh, Jiang
Published in Pacific journal of mathematics (01.01.1977)

by Hartwig, Robert E.
Published in SIAM journal on applied mathematics (01.07.1972)

by Hartwig, Robert E.
Published in SIAM journal on applied mathematics (01.01.1975)

by Chen, Xuzhou, Hartwig, Robert E.
Published in Linear & multilinear algebra (01.09.2006)