1.Some remarks for Mirakiyan's paper "The convergence on an approximation process" ACTA Scientiarum Naturalium Universitaties Jilinesis, (Journal of Jilin University), No.2(1962), 119--122.
2.(with L.C. Hsu) Method of multiplier-enlargement and approximation of unbounded functions by means of polynomial operators (I), ibid., No.2(1963), 61--79.
3.(with L.C. Hsu) Method of multiplier-enlargement and approximation of unbounded functions by means of polynomial operators (II), ibid., No.2(1963), 375--385.
4.Approximation of non-bounded continuous functions by some singular integrals, Mathematica(Cluj), Vol.5(28), 1(1963), 131--136. (MR 31# 2553).
5.The degree of approximations by bivariate Bernstein and Landau polynomials, Journal of Jilin university, No.2(1963), 537--547.
6.Approximation of periodic function of several variables by some trigonometric polynomials, ibid., No.3(1963), 173--179.
7.Approximation of unbounded functions by modified Landau and Bernstein polynomials on the whole plane, Dokl. Acad. Nauk USSR. Vol.150, No.6(1963), 1195--1197. (MR 28# 395; SCI[1964--]).
8.(with L.C. Hsu) General "Enlargement multiplier" methods and approximation of unbounded continuous functions by certain concrete polynomial operators, Dokl. Acad. Nauk USSR, Vol.156, No.2(1964), 264--267. (MR 29# 2558; SCI[1964--]).
9.Asymptotic formulas on the order of approximation for functions of several variables by linear positive operators defined on k-dimensional Euclidean space, Journal of Jilin university, No.1(1964), 1--16.
10.Method of multiplier-enlargement and approximation of unbounded functions by means of polynomial operators (IV), ibid., No.1(1965), 31--43. (RZ,1966, 46--102).