@article{MZ_1984__187_173479,
     author = {R. Picard},
     title = {An {Elementary} {Proof} for a {Compact} {Imbedding} {Result} in {Generalized} {Electromagnetic} {Theory.}},
     journal = {Mathematische Zeitschrift},
     pages = {151--164},
     publisher = {mathdoc},
     volume = {187},
     year = {1984},
     zbl = {0527.58038},
     url = {http://geodesic.mathdoc.fr/item/MZ_1984__187_173479/}
}