@article{DAN_1995_342_6_a0,
     author = {A. Dzhuraev},
     title = {Some second-order overdetermined elliptic systems and boundary},
     journal = {Doklady Akademii Nauk},
     pages = {727--730},
     year = {1995},
     volume = {342},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1995_342_6_a0/}
}