Complex sentence: As a critic and art historian Merlin James has published many works including a book on the British artist David Jones and essays and articles on the Russian/French painter Serge Charchoune.
Split into simpler sentences: As a critic and art historian Merlin James has been widely published. His published works include a book on the British artist David Jones and many essays and articles on the Russian/French painter Serge Charchoune.