Bäcklund-Darboux transformation for non-isospectral canonical system and Riemann-Hilbert problem. Sakhnovich, Alexander — 2007 SIGMA. Symmetry, Integrability and Geometry: Methods and Applications [electronic only]
On a new class of structured matrices related to the discrete skew-self-adjoint Dirac systems. Fritzsche, Bernd; Kirstein, Bernd; Sakhnovich, Alexander L. — 2008 ELA. The Electronic Journal of Linear Algebra [electronic only]