Weighted weak-type inequalities for generalized Hardy operators. Bernardis, A.L.; Martín-Reyes, F.J.; Ortega Salvador, P. — 2006 Journal of Inequalities and Applications [electronic only]
Ergodic power functions for mean bounded, invertible, positive operators F. Martín-Reyes; P. Ortega Salvador — 1988 Studia Mathematica