Shabat, A. B.; Élkanova, Z. S.; Urusova, A. B. Two-sided Darboux transformations. (English. Russian original) Zbl 1282.13048 Theor. Math. Phys. 173, No. 2, 1507-1517 (2012); translation from Teor. Mat. Fiz. 173, No. 2, 207-218 (2012). MSC: 13N10 PDFBibTeX XMLCite \textit{A. B. Shabat} et al., Theor. Math. Phys. 173, No. 2, 1507--1517 (2012; Zbl 1282.13048); translation from Teor. Mat. Fiz. 173, No. 2, 207--218 (2012) Full Text: DOI
Gabiev, R. A.; Shabat, A. B. Differential operators commuting in the principal part. (English. Russian original) Zbl 1276.13019 Theor. Math. Phys. 171, No. 1, 435-441 (2012); translation from Teor. Mat. Fiz. 171, No. 1, 18-25 (2012). MSC: 13N10 35Q53 35Q55 PDFBibTeX XMLCite \textit{R. A. Gabiev} and \textit{A. B. Shabat}, Theor. Math. Phys. 171, No. 1, 435--441 (2012; Zbl 1276.13019); translation from Teor. Mat. Fiz. 171, No. 1, 18--25 (2012) Full Text: DOI
Shabat, A. B.; Elkanova, Z. S. Commuting differential operators. (English. Russian original) Zbl 1245.13018 Theor. Math. Phys. 162, No. 3, 276-285 (2010); translation from Teor. Mat. Fiz. 162, No. 3, 334-344 (2010). MSC: 13N10 37K10 12H05 34A05 PDFBibTeX XMLCite \textit{A. B. Shabat} and \textit{Z. S. Elkanova}, Theor. Math. Phys. 162, No. 3, 276--285 (2010; Zbl 1245.13018); translation from Teor. Mat. Fiz. 162, No. 3, 334--344 (2010) Full Text: DOI