@article{KUKZ_1985_22_22_a4,
     author = {S. G. Amirkhanova and L. N. Zhurbenko},
     title = {An inverse boundary value problem with parameter $x$ for a first-order elliptic system in the case of a multiply connected domain},
     journal = {Trudy seminara po kraevym zada\v{c}am},
     pages = {36--47},
     publisher = {mathdoc},
     volume = {22},
     number = {22},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/KUKZ_1985_22_22_a4/}
}