@article{ZNSL_1985_147_a0,
     author = {M. Sh. Birman},
     title = {On {Maxwell} operator in domains with edges},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {3--9},
     year = {1985},
     volume = {147},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1985_147_a0/}
}