deletions | additions       diff --git a/textbf_References_http_mathworld_wolfram__1.tex b/textbf_References_http_mathworld_wolfram__1.tex  index 61f513c..cebfd4e 100644  --- a/textbf_References_http_mathworld_wolfram__1.tex  +++ b/textbf_References_http_mathworld_wolfram__1.tex 
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\textbf{References} \textbf{References}\\  http://mathworld.wolfram.com/RubiksCube.html \\  https://www.rubiks.com/about/the-history-of-the-rubiks-cube\\  http://www.telegraph.co.uk/technology/google/10840482/Rubiks-cube-invention-40-years-old-and-never-meant-to-be-a-toy.html