By PoorLeno (talk) - the English language Wikipedia (log).Original text: I created this work entirely by myself. References:Forinash, Kyle. Hydrogen W Simulation. Indiana University Southeast. Retrieved on 2008-12-18.Tokita, Sumio; Sugiyama, Takao; Noguchi, Fumio; Fujii, Hidehiko; Kobayashi, Hidehiko (2006). "An Attempt to Construct an Isosurface Having Symmetry Elements". Journal of Computer Chemistry, Japan 5 (3): 159–164. DOI:10.2477/jccj.5.159., Public Domain, https://commons.wikimedia.org/w/index.php?curid=5854697