@article{ASNSP_1957_3_11_3-4_117_0,
     author = {Ostrow, E. H. and Stein, E. M.},
     title = {A generalization of lemmas of {Marcinkiewicz} and {Fine} with applications to singular integrals},
     journal = {Annali della Scuola Normale Superiore di Pisa - Scienze Fisiche e Matematiche},
     pages = {117--135},
     publisher = {Scuola normale superiore},
     volume = {Ser. 3, 11},
     number = {3-4},
     year = {1957},
     mrnumber = {101454},
     zbl = {0082.05502},
     language = {en},
     url = {http://www.numdam.org/item/ASNSP_1957_3_11_3-4_117_0/}
}