scientific article published on October 1983

scientific article published on 01 January 1985

scientific article

scientific article

scientific article published on September 1, 1997

scientific article published in 1975

scientific article published in January 1967

scientific article published on 01 October 1977

scientific article published on 01 May 1983

scientific article published on 01 May 1995

scientific article published on 01 April 1990

scientific article published on 01 July 1988

scientific article published on October 1, 1981

scientific article

scientific article published in October 1981

scientific article published on 01 September 1979

scientific article published on 01 June 1989

scientific article published on 01 September 1983