@article{RSMUP_1982__67__13_0,
     author = {Aiena, Pietro},
     title = {Relative regularity and {Riesz} operators},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {13--19},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {67},
     year = {1982},
     mrnumber = {682699},
     zbl = {0499.47011},
     language = {en},
     url = {http://www.numdam.org/item/RSMUP_1982__67__13_0/}
}