@article{RSMUP_1985__74__63_0,
     author = {Valent, Tullio},
     title = {A property of multiplication in {Sobolev} spaces. {Some} applications},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {63--73},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {74},
     year = {1985},
     mrnumber = {818717},
     zbl = {0587.46037},
     language = {en},
     url = {http://www.numdam.org/item/RSMUP_1985__74__63_0/}
}