• Nagy, K., On the Walsh-Marcinkiewicz means and kernels.

• Toledo, R., Recent developments on approximation theory with respect to representative product systems.

• Blahota, I., On boundedness of maximal operators with respect to Vilenkin systems.
• Gát, Gy., Approximation properties of one and two dimensional Fejér and Marczinkiewicz means of Fourier series with respect to Walsh and Vilenkin systems.
• Nagy, K., Approximation by Nörlund means of Walsh-Kaczmarz-Fourier series.
• Toledo, R., Representative product systems.

• Blahota, I., Maximal operators on Vilenkin systems.
• Gát, Gy., One and two dimensional Fejér means on the Walsh and Vilenkin groups.
• Nagy, K., Approximation by Nörlund means of Walsh-Fourier series.
• Toledo, R., The maximal value of Dirichlet kernels with respect to representative product systems.

• Blahota, I., On maximal operators with respect to Walsh and Vilenkin systems.
• Gát, Gy., Some convergence and divergence results with respect to summation of Fourier series on one and two-dimensional unbounded Vilenkin groups.
• Nagy, K., Uniform and L-convergence of the Nörlund logarithmic means of Walsh-Kaczmarz-Fourier series.
• Toledo, R., Convergence in $L^p$-norm of Cesaro means on the complete product of finite noncommutative groups.

Discrete Analysis and Applications, Thessaloniki, Greece, September 27-29, 2008.

• Blahota, I., Almost everywhere convergence on the 2-adic integers.
• Gát, Gy., Convergence and divergence of Fejér means of Fourier series on one and two-dimensional Walsh and Vilenkin groups.
• Nagy, K., Almost everywhere convergence of a subsequence of the logarithmic means of Vilenkin-Fourier series.
• Toledo, R., Convergence in L_p-norm on the complete product of finite noncommutative groups.

International Workshop on Orthogonal Polynomials and Approximation Theory 2008, Madrid, Spain, September 8-12, 2008. 

• Toledo, R., Fourier analysis on the complete product of noncommutative finite groups (poster).

Mathematical Inequalities and Applications 2008, Trogir-Split, Croatia, June 8-14, 2008.

• Blahota, I.,  Maximal Operators on Vilenkin Systems,
• Gát, G.,  Maximal Convergence Spaces of $(C, alpha)$ Summability Methods of Trigonometric and Walsh Series,
• Nagy, K., Some Boundedness Properties of the Maximal Operator of the Subsequence of Walsh-Kaczmarz Logarithmic Means.

Second Workshop on  Extremal Problems in Fourier analysis, Budapest, Hungary, September 18-24, 2007.

• Blahota, I., Maximal operators of Fejér and Marcinkiewicz means on Vilenkin systems.
• Gát, G., Convergence of Cesaro means of Fourier series.
• Nagy, K., On the $L^1$-norm of the weigted maximal function of Fejér kernels with respect to the Walsh-Kaczmarz system.
• Toledo, R., On the convergence in $L^p$-norm of Cesaro means with respect to representative product systems.

• Blahota, I., Investigations with respect to the maximal operator of Fejér means on Vilenkin systems (poster).
• Gát, G., Restricted convergence of Fejér means of trigonometric Fourier series  (poster).
• Nagy, K., On the Marcinkiewicz and $(C,\alpha)$-means  of the quadratical partial sums of double Walsh-Kaczmarz-Fourier series (poster).
• Toledo, R., Properties of representative product systems on the complete product of non-commutative finite groups (poster).

• Blahota, I., On the maximal operator of Fejér and Marcinkiewicz means with respect to the Vilenkin system.
• Gát, G., Some convergence properties of Fourier series with respect to the weighted Walsh system.
• Nagy, K., The boundedness of the two-dimensional Marcinkiewicz-Fejér means with respect to the Walsh-Kaczmarz system.
• Toledo, R., Convergence of Walsh-Fourier series of functions with bounded osscillacion.
  

Fourier Analysis Extremal Problems and Approximation, Budapest, Hungary, September 19-25, 2005.

• Blahota, I., Some approximation properties of Nörlund logarithmic means on Vilenkin groups,
• Gát, G. Maximal convergence spaces of some operators related to the Fourier series of two-variable functions on the Walsh group,
• Nagy, K., Convergence properties of the Marcinkiewicz means of integrable functions with respect to the Walsh-Kaczmarz system,
• Toledo, R., Negative results concerning Fourier series on the complete product of S3.  

Constructive Theory Of Functions, Varna, Bulgary, June 1-7, 2005.

• Blahota, I., Norm convergence of logarithmic means of Fourier series on unbounded Vilenkin groups,
• Gát, G., On convergence properties of logarithmic means of Walsh-Fourier series,
• Nagy, K., Almost everywhere convergence of the two-dimensional Marcinkiewicz means with respect to the Walsh-Kaczmarz system,
• Toledo, R., Fourier analysis on the complete product of finite groups.

5-th International Conference on Functional and Approximation Theory, Maratea, Italy,  June 16-23, 2004.

• Blahota, I., On Vilenkin-like systems,
• Gát, G., On a.e. summability of Fourier series on Vilenkin groups,
• Nagy, K., Some convergence properties of the Walsh-Kaczmarz system,
• Toledo, R., Convergence in norm on the complete product of finite groups.

Dyadic Analysis with Applications and Generalizations, Balatonszemes, Hungary, June 12-15, 2003.

• Nagy, K., Norm convergence of Fejér means on $\mathbf {R}^+$ with respect to Walsh-Kaczmarz system,
• Toledo, R., On the Dirichlet kernels with respect to representative product system

Alexits Memorial Conference, Budapest, Hungary, August 9-14, 1999.

• Blahota, I., Investigation with respect to the two-dimensional Vilenkin space,
• Nagy, K., The (H,L)-boundedness of the Sunouchi operator with respect to Walsh-Kaczmarz system,
• Toledo, R., On the convergence of Fourier series on CTD groups.

Gyula Strommer national memorial conference, Balatonfüred, Hungary, May 1-5, 1999.

• Toledo. R., Recent developments on approximation theory on CTD groups.

Numbers, Functions, Equations '98, Noszvaj, Hungary,  May 31-June 6, 1998. 

• Blahota, I., On a norm inequality with respect to Vilenkin-like systems,
• Gát, G., Nagy, K., Investigation of the Sunouchi operator with respect to the Walsh-Kaczmarz system.

International Conference on Approximation and Optimization, Cluj-Napoca, Romania, July 29-August 1, 1996. 

• Nagy, K., On the (H,L) typeness of the maximal operator of the derivate on two-dimensional Vilenkin groups.

• Toledo, R., On Hardy-norm of operators with property D.

PAMM Conference, Göd,  Oktober 21-24, 1992.

• Blahota, I., On the theorem of Fridli and Simon with respect to some Vilenkin-like systems.

PAMM Conference, Balatonfüred, May 1991.

• Toledo, R., Estimates of the Fourier coefficient with respect to $\Psi\alpha$  systems on Vilenkin groups.