@article{CMFD_2011_39_a1,
     author = {M. S. Agranovich},
     title = {Spectral problems in {Lipschitz} domains},
     journal = {Contemporary Mathematics. Fundamental Directions},
     pages = {11--35},
     publisher = {mathdoc},
     volume = {39},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/CMFD_2011_39_a1/}
}