@article{RM_1986_41_1_a3,
     author = {S. Kh. Aranson and V. Z. Grines},
     title = {Topological classification of flows on closed two-dimensional manifolds},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {183--208},
     publisher = {mathdoc},
     volume = {41},
     number = {1},
     year = {1986},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1986_41_1_a3/}
}