@article{SJIM_2004_7_2_a10,
     author = {M. S. Soppa},
     title = {The use of duality relations for $E$-~and~$H$-polarisations in inverse problems of scattering on impedance surfaces},
     journal = {Sibirskij \v{z}urnal industrialʹnoj matematiki},
     pages = {111--116},
     publisher = {mathdoc},
     volume = {7},
     number = {2},
     year = {2004},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/SJIM_2004_7_2_a10/}
}