no. 2
Is an operator on weak L P which commutes with translations a convolution ?
Annali della Scuola Normale Superiore di Pisa - Classe di Scienze, Série 4, Tome 21 (1994) no. 2, pp. 267-278 
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     title = {Is an operator on weak $L^P$ which commutes with translations a convolution ?},
     journal = {Annali della Scuola Normale Superiore di Pisa - Classe di Scienze},
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     year = {1994},
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     volume = {Ser. 4, 21},
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     zbl = {0815.47036},
     language = {en},
     url = {https://www.numdam.org/item/ASNSP_1994_4_21_2_267_0/}
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Brandolini, Luca; Colzani, Leonardo. Is an operator on weak $L^P$ which commutes with translations a convolution ?. Annali della Scuola Normale Superiore di Pisa - Classe di Scienze, Série 4, Tome 21 (1994) no. 2, pp. 267-278. https://www.numdam.org/item/ASNSP_1994_4_21_2_267_0/

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