Linear Algebra and its ApplicationsVolume 30, April 1980, Page iiEditorial BoardAuthor links open overlay panelShow moreShareCitehttps://doi.org/10.1016/0024-3795(80)90176-7Get rights and contentUnder an Elsevier user licenseopen archivePrevious article in issueNext article in issueRecommended articlesCited by (0)Copyright © 1980 Published by Elsevier Inc. All rights reserved.