@article{CMJ_2005_55_1_a7,
     author = {Ding, Changming},
     title = {Orbits connecting singular points in the plane},
     journal = {Czechoslovak Mathematical Journal},
     pages = {125--132},
     year = {2005},
     volume = {55},
     number = {1},
     mrnumber = {2121660},
     zbl = {1081.37002},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMJ_2005_55_1_a7/}
}