@article{MZM_2007_81_6_a4,
     author = {Yu. V. Kuryshova},
     title = {Inverse {Spectral} {Problem} for {Integro-Differential} {Operators}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {855--866},
     publisher = {mathdoc},
     volume = {81},
     number = {6},
     year = {2007},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2007_81_6_a4/}
}