scientific article (publication date: 2005)

scientific article published in January 2004

scientific article published on July 2002

scientific article published in April 2006

scientific article published in April 2004

scientific article published in April 2004

scientific article published on July 2003

scientific article published in September 2004

scientific article published in May 2003

scientific article published on 01 February 2003

scientific article published on 01 March 2003

scientific article published in November 2004