Alekna, Petras. “The Inhomogeneous Riemanian Boundary – Value Problem With Infinite Index of the Logarithmic Order ρj ≥ 1 for Complex Dini-Lipshitz Contour”. Lietuvos Matematikos Rinkinys, vol. 39, no. III, Dec. 1999, pp. 151–156, https://doi.org/10.15388/LMD.1999.35549.