Geodesic
Rate of Convergence of Pure Greedy Algorithms
Matematičeskie zametki, Tome 76 (2004) no. 4, pp. 539-552.

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This paper is devoted to the study of the rate of convergence of pure greedy algorithms in Hilbert space. We obtain upper bounds for the rate of convergence of pure greedy algorithms for functions from the class $A_{\alpha,\beta}(D)$. 
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     author = {E. D. Livshits},
     title = {Rate of {Convergence} of {Pure} {Greedy} {Algorithms}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {539--552},
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     volume = {76},
     number = {4},
     year = {2004},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2004_76_4_a6/}
}
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E. D. Livshits. Rate of Convergence of Pure Greedy Algorithms. Matematičeskie zametki, Tome 76 (2004) no. 4, pp. 539-552. http://geodesic.mathdoc.fr/item/MZM_2004_76_4_a6/

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[4] Livshitz E. D., Temlyakov V. N., “Two lower estimates in greedy approximation”, Constructive Approximation, 19 (2003), 509–524 | DOI | MR