@article{ND_2019_15_2_a8,
     author = {T. V. Medvedev and E. V. Nozdrinova and O. V. Pochinka and E. V. Shadrina},
     title = {On a {Class} of {Isotopic} {Connectivity} of {Gradient-like} {Maps} of the 2-sphere with {Saddles} of {Negative} {Orientation} {Type}},
     journal = {Russian journal of nonlinear dynamics},
     pages = {199--211},
     publisher = {mathdoc},
     volume = {15},
     number = {2},
     year = {2019},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ND_2019_15_2_a8/}
}