@article{RM_1978_33_1_a7,
     author = {A. V. Babin},
     title = {A~formula expressing the~solution of~a~differential equation with analytic coefficients on a~manifold without boundary in~terms of~the~local data~of~the problem},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {195--196},
     publisher = {mathdoc},
     volume = {33},
     number = {1},
     year = {1978},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1978_33_1_a7/}
}