http://www.theguardian.com/technology/2016/mar/07/ray-tomlinson-email-inventor-and-selector-of-symbol-dies-aged-74?utm_source=esp&utm_medium=Email&utm_campaign=GU+Today+main+Morning+mail+070316&utm_term=160464&subid=5050029&CMP=EMCNEWEML6619I2