Kroó András; Szabados József: On the density of homogeneous polynomials on regular convex surfaces. In: Acta scientiarum mathematicarum, (75) 1-2. pp. 143-159. (2009)
Kroó András; Szabados József: Approximation by lacunary Bernstein and self-reciprocal polynomials. In: Acta scientiarum mathematicarum, (60) 3-4. pp. 467-486. (1995)
Kroó András: On the unicity of best Chebyshev approximation of differentiable functions. In: Acta scientiarum mathematicarum, (47) 3-4. pp. 377-389. (1984)