[1]  Lavretsky E. On the geometric convergence of neural approximation. IEEE Transaction On Neural Networks, 2002, 2: 174--282

[2]  Jones L K. A simple lemma on greedy approximations in Hilbert space and convergence rates for projection pursuit regression and neural network training. Ann Statist, 1992, 20: 608--613

[3]  Barron R A. Universal approximation bounds for superposititions of a sigmoidal function. IEEE Trans Inform Theory, 1993, 39: 930--945

[4]  Cybenko G. Mathematics of control. Signals and Systems, 1989, 2: 303--314

[5]  Chen Tianping, Chen H, Liu R Y. Computing Science and Statistics. Proceedings of the 22nd Symposium on the Interface. New York: Springer-Verlag, 1991: 163--168

[6]  Chen T P. Approximation problems in system identification with neural networks. Science in China, Ser A, 1994, 24: 1--7

[7]  Silnichenko A V. Rate of convergence of greedy algorithms. Mathematical Notes, 2004, 76: 582--586

[8]  Livshits E D. Rate of cinvergence of pure greedy algorithms. Mathematical Notes, 2004, 76: 497--510

[9]  Heping W. Greedy algorithm for functions with low mixed smoothness. J Approx Theory, 2005, 137: 264--276

[10]  Livshits E D, Tenlyakov V N. Simultaneous greedy approximation in Banach spaces. J Complexity, 2005, 21: 275--293

[11]  Temlyakov V N. Greedy type approximation in Banach spaces and applications. Complexity, 2005, 21: 257--292

[12]  Leviatan D, Temlyakov V N. Simultaneous approximaton by greedy algirithms. Adv Comput Math, 2006, 25: 73--90

[13]  Temlyakov V N. Greedy expansions in Banach spaces. Adv Comput Math, 2007, 26: 431--449

[14]  Temlyakov V N. Relaxation in greedy approximation. Constr Approx, 2008, 28: 1--25

[15]  Dilwoth S J. Weak convergence of greedy algorithms in Banach spaces. Fourier Anal Appl, 2008, 14: 609--628

[16]  Deimling K. Nonlinear Functional Analysis. Berlin: Springer-Verlag, 1985

[17]  Dragomir S S. On continuous sublinear functionals in reflexive Banach spaces and applications. Riv Mat Univ Parma, 1990, 12: 239--250

[18]  Dragomir S S. Approximation of continuous linear functionals in real normed spaces. Rend Mat, 1992, 12: 357--364

[19]  Dragomir S S. Continuous linear functionals and norm derivatives in real normed spaces.  Univ Beograd Publ Elektrotehn Fak, 1992, 3: 5--12

[20]  Xu H K. Inequalities in Banach spaces with applications. Nonlinear Analysis Theory and Applications, 1991, 12: 1127--1138

[21]  Reich S.  An iterative procedure for constructing zeros of accretive sets in Banach space. Nonlinear Anal, 1978, 2: 85--92