@article{DCG_1994__11_3_131288,
     author = {Y. Ikebe and M.A. Perles and A. Tamura and S. Tokunaga},
     title = {The {Rooted} {Tree} {Embedding} {Problem} into {Points} in the {Plane.}},
     journal = {Discrete & computational geometry},
     pages = {51--64},
     publisher = {mathdoc},
     volume = {11},
     number = {3},
     year = {1994},
     zbl = {0791.05027},
     url = {http://geodesic.mathdoc.fr/item/DCG_1994__11_3_131288/}
}