@article{RSMUP_2014__131__67_0,
     author = {Simpson, Henry C. and Spector, Scott J.},
     title = {A product property of {Sobolev} spaces with application to elliptic estimates},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {67--76},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {131},
     year = {2014},
     mrnumber = {3217751},
     zbl = {06329758},
     language = {en},
     url = {http://archive.numdam.org/item/RSMUP_2014__131__67_0/}
}