284–291;*Peter Eades, Tao Lin, and Xuemin Lin, "Two Tree Drawing Conventions", International Journal of Computational Geometry and Applications, 1993, volume 3, number 2, pp.
284—291;* Peter Eades, Tao Lin, and Xuemin Lin, Two Tree Drawing Conventions, International Journal of Computational Geometry and Applications, 1993, volume 3, number 2, pp.