https://gandhiviswanathan. wordpress https://gandhiviswanathan.wordpress.com/2014/10/07/domain-coloring-for-visualizing-complex-functions/ http://users.mai.liu.se/hanlu09/complex/domain_coloring.html Visualizing complex analytic functions using domain coloring Hans Lundmark Department of Mathematics Linköping University, Sweden
http://www. mi. fu-berlin http://www.mi.fu-berlin.de/en/math/groups/ag-geom/publications/db/lifteddomaincoloring.pdf
https://www.wolframalpha.com/input/?i=f(z)%3D1%2Fz http://www-users.math.umn.edu/~arnold/complex-maps/ http://www-users.math.umn.edu/~arnold/complex-maps/zsquared3.html