- V. F. Babenko, “On optimization of weight quadrature formulas”, Ukr Math J, 47, № 8, 1995, 1157
- A. S. Kochurov, “Direct and Inverse Theorems on Approximation by Piecewise Polynomial Functions”, J Math Sci, 209, № 1, 2015, 96
- V. P. Motornyi, “Investigation of the optimization of quadrature formulas by Dnepropetrovsk mathematicians”, Ukr Math J, 42, № 1, 1990, 13