written and researched by Amy C. Balfour [and 3 others]. this edition written and researched by Amy C. Balfour [and 6 others]. written and researched by Charles Rawlings-Way [and 5 others] written and researched by Anthony Ham [and five others] this edition written and researched by Alexis Averbuck [and 3 others]. written and researched by Paul Clammer and Anirban Mahapatra. written by Amy Balfour [and 24 others]. this edition written and researched by Anthony Ham [and 7 others] this edition written and researched by Anthony Ham [and 12 others]. this edition written and researched by Jean-Bernard Carillet [and 10 others].