chapter published in 2011

article

book review published in 1988

article published in 1999

article published in 1967

article published in 1975

article published in 1969

article published in 1972

article published in 1971

scientific article published in January 1999

article published in 1971

article published in 1973

article published in 1971

scientific article published in 2006

article published in 1974

book published in 2006

book published in 1975

scientific article (publication date: June 2000)

scientific article published in January 2005

scientific article published in January 1985

article published in 1971