@article{TM_1998_221_a18,
     author = {B. Chen and M. Yan},
     title = {Singularity from {Eulerian} {Viewpoint}},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {305--319},
     year = {1998},
     volume = {221},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TM_1998_221_a18/}
}