scientific article published in 1978

scientific article published in 1988

scientific article published in 1983

scientific article published in 1989

scientific article published in 1988

scientific article published in 1977

scientific article published in 1986

scientific article published in 1984

scientific article published in 1976

scientific article published in 1975

scientific article published in 1982

scientific article published in 1964

scientific article published in 1964

scientific article published in 1964

scientific article published in 1964

scientific article published in January 1990

scientific article published in 1979

scientific article published in 1978

scientific article published on 25 July 2002

scientific article published in 1947

scientific article

scientific article

scientific article published in 1982

scientific article published in 1981

scientific article published in 1980

scientific article published in 1951

scientific article published in 1986

scientific article published in 1985

scientific article published in 1952

scientific article

scientific article

scientific article

scientific article published in 1966

scientific article published in 1985

scientific article published in 1985