@article{DAN_1968_182_1_a4,
     author = {M. M. Gekhtman and I. V. Stankevich},
     title = {A study of the analytic properties of the resolvent kernel of a fourth order ordinary differential operator on a {Riemann} surface},
     journal = {Doklady Akademii Nauk},
     pages = {23--26},
     publisher = {mathdoc},
     volume = {182},
     number = {1},
     year = {1968},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1968_182_1_a4/}
}