scientific article published in April 1986

scientific article published in June 1995

scientific article published in November 1985

scientific article published in June 1981

scientific article published in May 2004

scientific article published in February 1986

scientific article published in March 1988

scientific article published in May 1995

scientific article published in May 1988

scientific article published in March 1982

scientific article published in December 1983

scientific article published in September 1986

scholarly article published March 1990

scientific article published in February 1983

scientific article published in April 2003

scientific article published in July 2004

scientific article published in May 1987

scientific article published in April 1979

scientific article published in October 1986

scientific article published in April 2010

scientific article published in August 1984

scientific article published in April 1995

scientific article published in May 1992

scientific article published in October 1986

scientific article published in March 1981

scientific article published in December 2003

scientific article published in July 2008

scientific article published in July 1980

scientific article published in May 1983

scientific article published in March 1985

scientific article published in July 1981

scientific article published in June 2003

scientific article published in July 1999

scientific article published in June 1981

scientific article published in October 1985

scientific article published in February 1986

scientific article published in June 1982

scientific article published in June 2009

scientific article published in April 1998

scientific article published in November 1982

scientific article published in November 1992

scientific article published in January 1983

scientific article published in October 1990

scientific article published in December 1980

scientific article published in September 1981

article published in 1984

scientific article published in September 1986

scientific article published in November 1989

scientific article published in October 2004

scientific article published in August 1999

scientific article published in November 1982

scientific article published in August 1987

scientific article published in November 1980

scientific article published in November 1980

scientific article published in November 1979

scientific article published in December 1981

scientific article published in November 1983

scientific article published in February 1998

scientific article published in May 1979