@article{UFA_2020_12_2_a1,
     author = {V. V. Volchkov and Vit. V. Volchkov},
     title = {Overdetermined {Neumann} boundary value problem in unbounded domains},
     journal = {Ufa mathematical journal},
     pages = {10--20},
     publisher = {mathdoc},
     volume = {12},
     number = {2},
     year = {2020},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/UFA_2020_12_2_a1/}
}