The following correction was printed in the Guardian's Corrections and clarifications column, Monday 11 May 2009.
The following correction was printed in the Guardian's Corrections and clarifications column, Wednesday January 25 2006 Well done.
The following correction was printed in the Guardian's Corrections and Clarifications column, Friday May 16 2003 Girgenti, referred to in the piece is modern Agrigento.
The following correction was printed in the Guardian's Corrections and clarifications column, Thursday October 19 2006 In the article below Peter Bradshaw's byline became Patrick Barclay.
The following correction was printed in the Guardian's Corrections and clarifications column, Monday June 26 2006 Udmurtneft, the oil production unit bought by Sinopec, is not in Siberia.
The following correction was printed in the Guardian's Corrections and clarifications column, Tuesday July 1 2008.
The following correction was printed in the Guardian's Corrections and clarifications column, Saturday 4 March 2006.
The following correction was printed in the Guardian's Corrections and clarifications column, Saturday June 25 2005.
The following correction was printed in The Observer's For The Record column, Sunday June 1 , 2003
The following correction was printed in the Guardian's Corrections and clarifications column, Wednesday April 12 2006.
The following correction was printed in the Guardian's Corrections and clarifications column, 3 February 2011.
