@article{RSMUP_1967__39__144_0,
     author = {Bressan, Sergio},
     title = {Propriet\`a di media del campo elettromagnetico},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {144--162},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {39},
     year = {1967},
     language = {it},
     url = {http://www.numdam.org/item/RSMUP_1967__39__144_0/}
}