article published in 2000

article published in 1984

article published in 1992

scientific article published in January 1999

article published in 1982

article published in 1998

article published in 1995

article published in 2014

article published in 1997

article published in 2006

article published in 2005

article published in 2008

article published in 1996

article published in 1995

article published in 1976

article published in 1994

article published in 2010

article published in 2003

article published in 1978

article published in 1993

article published in 2008

scientific article published in January 2001

article published in 1988

article published in 2001

article published in 2000

article published in 1980

article published in 1993

scientific article published in January 1998

article published in 1984

article published in 1993

article published in 1981

article published in 2001

article published in 1997

article published in 1979

article published in 1982

article published in 1994

article published in 1980

article published in 2006

article published in 2002

scientific article published in January 2001

article published in 1996

article published in 2016

article published in 1992