10.1371/journal.pone.0051199.g001 Xiangtao Li Xiangtao Li Minghao Yin Minghao Yin Two simple geometrical bodies under the surface. Public Library of Science 2013 geometrical bodies 2013-02-19 18:52:31 Figure https://plos.figshare.com/articles/figure/_Two_simple_geometrical_bodies_under_the_surface_/197750 <p>Two simple geometrical bodies under the surface.</p>