Goginava Ushangi; Sahakian Artur: On the convergence of Cesàro means of negative order of double trigonometric Fourier series of functions of bounded partial generalized variation. In: Acta scientiarum mathematicarum, (77) 3-4. pp. 451-471. (2011)
Goginava Ushangi: Maximal operators of Fejér-Walsh means. In: Acta scientiarum mathematicarum, (74) 3-4. pp. 615-624. (2008)
Goginava Ushangi; Tkebuchava G.: Convergence of subsequences of partial sums and logarithmic means of Walsh-Fourier series. In: Acta scientiarum mathematicarum, (72) 1-2. pp. 159-177. (2006)
Goginava Ushangi: On the approximation properties of partial sums of Walsh-Fourier series. In: Acta scientiarum mathematicarum, (72) 3-4. pp. 569-579. (2006)