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When he died I was already accepted as a leading European authority on the great period of Chinese Ceramics.

Henry Boxer, a leading international authority on and dealer in outsider art, has been a key adviser and supporter since 2010.

Sylvia Mercado Kierkegaard is a leading international authority in computer law.

In 2003 Joseph Kerman called him "a leading musical scholar of the postwar generation, and the leading American authority on Beethoven."

Glenn Firebaugh is an American sociologist (born: Charleston, West Virginia) and leading international authority on social science research methods.

He is widely published on the subject of Japanese law and the Japanese legal system, and is regarded as a leading American authority in these areas.

She became especially involved with the work of Guyanese author Wilson Harris, becoming one of the leading international authorities on his work.

He has been considered one of the leading American authorities on Soviet affairs.

She retired in summer 2011 after an academic career spanning more than 40 years, during which she became recognised as a leading international authority on the management of historic sites.