|   [1] Fine J. Ces`aro summability of Walsh-Fourier series. Proc Nat Acad Sci USA, 1955, 41: 558–591 
 
[2] Fridli S. On the rate of convergence of Ces´aro means of Walsh-Fourier series. J Approx Theory, 1994, 76(1): 31–53 
 
[3] Fridli S, Manchuda P, Siddiqi A. Approximation by Walsh-N¨orlund means. Acta Sci Math (Szeged), 2008, 74(3/4): 593–608 
 
[4] Fujii N. A maximal inequality for H1-functions on a generalized Walsh-Paley group. Proc Amer Math Soc, 1979, 77: 111–116 
 
[5] G´at G. On (C, 1) summability of integrable functions with respect to the Walsh-Kaczmarz system. Studia Math, 1998, 130(2): 139–148 
[6] G´at G, Goginava U, Nagy K. On the Marcinkiewicz-Fej´er means of double Fourier series with respect to the Walsh-Kaczmarz system. Studia Sci Math Hungarica, 2009, 46(3): 399–421 
 
[7] Goginava U, Nagy K. On the maximal operator of Walsh-Kaczmarz-Fejer means. Czechoslovak Math J, 2011, 61(136): 673–686 
 
[8] Goginava U. The maximal operator of the Fej´er means of the character system of the p-series field in the Kaczmarz rearrangement. Publ Math Debrecen, 2007, 71(1/2): 43–55 
 
[9] Goginava U. The maximal operator of the Marcinkiewicz-Fej´er means of the d-dimensional Walsh-Fourier series. East J Approx, 2006, 12(3): 295–302 
 
[10] Goginava U. Maximal operators of Fej´er-Walsh means. Acta Sci Math (Szeged), 2008, 74: 615–624 
 
[11] Goginava U. Maximal operator of the Fej´er means of double Walsh-Fourier series. Acta Math Hungar, 2007, 115: 333–340 
 
[12] Goginava U. On the approximation properties of Ces´aro means of negative order of Walsh-Fourier series. J Approx Theory, 2002, 115: 9–20 
 
[13] Jo¯o I. On some problems of M. Horv´ath. Ann Univ Sci Budapest Sect Math, 1988, 31: 243–260 
 
[14] M´oricz F. Siddiqi A. Approximation by N¨orlund means of Walsh-Fourier series. J Approx Theory, 1992, 70: 375–389 
 
[15] Nagy K. Approximation by Ces´aro means of negative order of Walsh-Kaczmarz-Fourier series. East J Approx, 2010, 16(3): 297–311 
 
[16] Nagy K. Approximation by N¨orlund means of Walsh-Kaczmarz-Fourier series. Georgian Math J, 2011, 18(1): 147–162 
 
[17] Nagy K. Approximation by N¨orlund means of quadratical partial sums of double Walsh-Fourier series. Anal Math, 2010, 36(4): 299–319 
 
[18] Nagy K. Approximation by N¨orlund means of double Walsh-Fourier series for Lipschitz functions. Math Inequal Appl, 2012, 15(2): 301–322 
 
[19] Schipp F, Wade W R, Simon P, P´al J. Walsh Serie. An Introduction to Dyadic Harmonic Analysis. Bristol, New York: Adam Hilger, 1990 
 
[20] Schipp F. Certain rearrengements of series in the Walsh series. Mat Zametki, 1975, 18: 193–201 
 
[21] Schipp F. Pointwise convergence of expansions with respect to certain product systems. Anal Math, 1976, 2: 65–76 
 
[22] Simon P. Ces`aro summability with respect to two-parameter Walsh-system. Monatsh Math, 2000, 131: 321–334 
 
[23] Simon P. On the Ces`aro summability with respect to the Walsh-Kaczmarz system. J Approx Theory, 2000, 106: 249–261 
 
[24] Skvortsov V A. On Fourier series with respect to the Walsh-Kaczmarz system. Anal Math, 1981, 7: 141–150 
 
[25] ? Sneider A A. On series with respect to the Walsh functions with monotone coefficients. Izv Akad Nauk SSSR Ser Math, 1948, 12: 179–192 
 
[26] Tephnadze G. Fej´er means of Vilenkin-Fourier series. Studia Sci Math Hung, 2012, 49(1): 79–90 
 
[27] Tephnadze G. On the maximal operator of Vilenkin-Fej´er means. Turk J Math, 2013, 37: 308–318 
 
[28] Tephnadze G. On the maximal operators of Vilenkin-Fej´er means on Hardy spaces. Math Ineq Appl, 2013, 16(2): 301–312 
 
[29] Tephnadze G. On the maximal operators of Walsh-Kaczmarz-Fejer means. Periodica Mathematica Hungarica, 2013, 67(1): 33–45 
 
[30] Warari C. Best approximation by Walsh polinomials. Tohoku Math J, 1963, 15: 1–5 
 
[31] Weisz F. Martingale Hardy Spaces and Their Applications in Fourier Analysis. Berlin: Springer-Verlang, 1994 
 
[32] Weisz F. Summability of Multi-Dimensional Fourier Series and Hardy Space. Dordrecht: Kluwer Academic, 2002 
 
[33] Weisz F. Ces`aro summability of one and two-dimensional Walsh-Fourier series. Anal Math, 1996, 22: 229–242 
 
[34] Weisz F. -summability of Fourier series. Acta Math Hungar, 2004, 103: 139–176 
 
[35] Yano S H. Ces´aro summability of Walsh-Fourier series. Tohoku Math J, 1957, 15: 267–272 
 
[36] Young W S. On the a.e converence of Walsh-Kaczmarz-Fourier series. Proc Amer Math Soc, 1974, 44: 353–358  |