Geodesic
Schur test for the Hardy operator
Eurasian mathematical journal, Tome 4 (2013) no. 4, pp. 17-29.

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For monotonic functions necessary and sufficient conditions are investigated ensuring the equivalence of a function and of an integral containing that function. Factorization theorems (Schur tests) are proved for the classical Hardy operator and its adjoint in Lebesque spaces with monotonic weights. 
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E. I. Berezhnoi. Schur test for the Hardy operator. Eurasian mathematical journal, Tome 4 (2013) no. 4, pp. 17-29. http://geodesic.mathdoc.fr/item/EMJ_2013_4_4_a1/

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