scientific article

scientific article published in March 1983

scientific article

scientific article published in January 1967

scientific article published on 01 January 1970

scientific article

scientific article published in May 1987

scientific article published in January 1970

scientific article published in September 1966

scientific article published in August 1966

scientific article published on September 1967

scientific article published in January 1980

scientific article

scientific article published on 01 January 1980

scientific article published in January 1990

scientific article

scientific article

scientific article published on January 1, 1972

scientific article

scientific article published in March 1968

scientific article

scientific article published on January 1, 1974

scientific article published on January 1, 1977

scientific article published on October 1, 1997

scientific article published on January 1981

scientific article published in January 1987

scientific article published on July 1, 1973