scientific article published in 1962

scientific article published in March 1968

scientific article published in 1948

scientific article published in 1950

scientific article published in 1947

scientific article published in 1949

scientific article published in 1949

scientific article published in 1935

scientific article

scientific article published in 1948

scientific article published in 1951

scientific article published in January 1959

scientific article published in January 1951

scientific article published in January 1955