Ecco il video del rettangolo di Jung, Klimke, Auffarth e Algotson ed il cross di alcuni binomi.
http://www.youtube.com/watch?v=0RM4A4OTtJc&feature=related
http://www.youtube.com/watch?v=_7grW9f4Z8s&feature=related
http://www.youtube.com/watch?v=-LxzKsEecQ8&feature=related
http://www.youtube.com/watch?v=A8gbu1o1s9s&feature=related
http://www.youtube.com/watch?v=cjTB3l4p0Hw&feature=related
http://www.youtube.com/watch?v=DsfVWaSNhSo&feature=mfu_in_order&list=UL
http://www.youtube.com/watch?v=9-0261isEQk&feature=related
http://www.youtube.com/watch?v=yL3VGOyAq0A&feature=mfu_in_order&list=UL