https://pub.lucidpress.com/9cf78c8d-e724-4b99-8451-22f461f392e1/document.pdf
https://pub.lucidpress.com/5a5c9e13-b533-4ddf-a3e7-f5c8052a1c46/document.pdf
https://milkyway.cs.rpi.edu/milkyway/show_user.php?userid=2687128
https://milkyway.cs.rpi.edu/milkyway/show_user.php?userid=2687142
http://git.datamonkey.temple.edu/dhenrys/simpleways/issues/1
https://rextester.com/LTP4516
http://cpp.sh/7pias