@article{SM_1989_62_1_a8,
     author = {Yu. A. Aminov},
     title = {A~multidimensional generalization of the {Gauss--Bonnet} formula for vector fields in {Euclidean} space},
     journal = {Sbornik. Mathematics},
     pages = {139--144},
     publisher = {mathdoc},
     volume = {62},
     number = {1},
     year = {1989},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1989_62_1_a8/}
}