@article{RM_2001_56_5_a7,
     author = {L. D. Pustyl'nikov},
     title = {On analytic properties of an ellipse connected with singularities of its wave front},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {984--985},
     publisher = {mathdoc},
     volume = {56},
     number = {5},
     year = {2001},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_2001_56_5_a7/}
}