Spence, Lawrence E.; Insel, Arnold J.; Friedberg, Stephen H. Elementary linear algebra. A matrix approach. (English) Zbl 0960.15002 Upper Saddle River, NJ: Prentice Hall. xiv, 477 p. (2000). Reviewer: Rabe von Randow (Bonn) MSC: 15-01 15A06 15A04 15A15 15A18 15A21 65F05 65F20 41A05 15A09 15B36 93D25 90B10 92D25 39A10 34A30 60J10 PDFBibTeX XMLCite \textit{L. E. Spence} et al., Elementary linear algebra. A matrix approach. Upper Saddle River, NJ: Prentice Hall (2000; Zbl 0960.15002)
Nihtilä, Markku T. Optimal finite-dimensional solution for a class of nonlinear observation problems. (English) Zbl 0471.93014 J. Optimization Theory Appl. 38, 231-240 (1982). MSC: 93B07 93B17 34B05 93D99 PDFBibTeX XMLCite \textit{M. T. Nihtilä}, J. Optim. Theory Appl. 38, 231--240 (1982; Zbl 0471.93014) Full Text: DOI