@article{SM_2024_215_11_a2,
     author = {V. D. Galkin and O. V. Pochinka and D. D. Shubin},
     title = {Classification of nonsingular four-dimensional flows with a~untwisted saddle orbit},
     journal = {Sbornik. Mathematics},
     pages = {1499--1522},
     year = {2024},
     volume = {215},
     number = {11},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2024_215_11_a2/}
}