@article{EXMA_1993__2_4_225511,
     author = {Bielefeld, Ben and Sutherland, Scott and Tangerman, Folkert and Veerman, J.J.P.},
     title = {Dynamics of certain nonconformal degree-two maps of the plane.},
     journal = {Experimental mathematics},
     pages = {281--300},
     publisher = {mathdoc},
     volume = {2},
     number = {4},
     year = {1993},
     zbl = {0816.30015},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EXMA_1993__2_4_225511/}
}