%0 Journal Article %A Ondřej Došlý %T On transformations of self-adjoint linear differential systems and their reciprocals %J Annales Polonici Mathematici %D 1989 %P 223-234 %V 50 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap-50-3-223-234/ %R 10.4064/ap-50-3-223-234 %G en %F 10_4064_ap_50_3_223_234