Ken Norton, heavyweight boxing legend, dies at 70. Former US heavyweight boxing champion Ken Norton, who beat Muhammad Ali, has died at the age of 70, his son says. In: bbc.co.uk. BBC, 19. September 2013, abgerufen am 31. Mai 2014 (englisch): „Norton, who had been in poor health following a series of strokes, died at a care facility in Las Vegas, Nevada.“
