document.write("« Functional Approach to Electrodynamics of Media. (arXiv:1401.6800v7 [cond-mat.mtrl-sci] UPDATED)");document.write(" | ");document.write("GBDT of discrete skew-selfadjoint Dirac systems and explicit solutions of the corresponding non-stationary problems. (arXiv:1712.05984v1 [math.CA]) »");