scholarly article published in January 1990

scholarly article published in 1979

scientific article published in 1974

article published in the Transactions of the Devonshire Association in 1965

article published in 1966

article published in 1969

scholarly article published in November 1978

scholarly article published in January 1981

article published in the Transactions of the Devonshire Association in 1959

article published in the Transactions of the Devonshire Association in 1993

article published in 1972

article published in the Transactions of the Devonshire Association in 1954