article published in 2002

article published in 2008

article published in 2002

scientific article published in 1995

article published in 2000

article published in 2000

scientific article published in June 2013

article published in 2009

scientific article published in 1997

article published in 2010

scientific article published in 2008

article published in 1991

scholarly article by Mark Bowden published in January 1983