@article{RM_1984_39_2_a28,
     author = {S. Yu. Orevkov},
     title = {Reorientation of~level surfaces of~a~function in~a~neighbourhood of~a~simple unimodular critical point},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {187--188},
     publisher = {mathdoc},
     volume = {39},
     number = {2},
     year = {1984},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1984_39_2_a28/}
}