@article{UFA_2021_13_2_a7,
     author = {A. O. Smirnov and V. B. Matveev},
     title = {Finite-gap solutions of nonlocal equations   in {Ablowitz-Kaup-Newell-Segur} hierarchy},
     journal = {Ufa mathematical journal},
     pages = {81--98},
     publisher = {mathdoc},
     volume = {13},
     number = {2},
     year = {2021},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/UFA_2021_13_2_a7/}
}