scientific article published on 01 January 1954

scientific article published on 01 December 1973

scientific article published on March 1, 1979

scientific article published on 01 December 1971

scientific article published on 01 January 1965

scientific article published on 01 January 1970

scientific article published on 01 March 1985

scientific article published on 01 January 1973

scientific article published on 01 January 1976

scientific article published on 01 May 1968

scientific article published on April 1, 1971

scientific article published in April 1970

scientific article published on 01 January 1987

scientific article published on 01 January 1965

scientific article published on 01 January 1972

scientific article published on 01 January 1973

scientific article published on 01 January 1967

scientific article

scientific article published on 01 January 1992

scientific article published on July 1, 1975

scientific article published on 01 January 1979

scientific article published on 01 January 1965

scientific article published on 01 February 1980

scientific article published on 01 January 1951

scientific article published in July 1982

scientific article

scientific article published on 01 December 1983

scientific article published on February 1, 1975

scientific article published on 01 January 1954

scientific article published on 01 January 1972

scientific article published on 01 April 1950

scientific article published on 01 March 1950

scientific article published on 01 May 1978

scientific article published on 01 January 1955

scientific article published on 01 January 1953

scientific article published on 01 May 1961

scientific article published on 01 January 1954

scientific article published on 01 March 1962