@article{SM_1972_17_1_a3,
     author = {B. V. Dekster},
     title = {Estimates of the volume of a~region in {a~Riemannian} space},
     journal = {Sbornik. Mathematics},
     pages = {61--87},
     publisher = {mathdoc},
     volume = {17},
     number = {1},
     year = {1972},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1972_17_1_a3/}
}