@article{RM_2008_63_5_a5,
     author = {M. G. Knyazeva and G. Yu. Panina},
     title = {On non-isotopic saddle hedgehogs},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {968--969},
     publisher = {mathdoc},
     volume = {63},
     number = {5},
     year = {2008},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_2008_63_5_a5/}
}