Duytschaever published on Alfred Döblin, Hugo Claus, Simon Vestdijk, Hella Haasse and various English-language authors including James Joyce and William Faulkner. He translated of Edmund Husserl from 1977. He published on the of Hugo Claus. He was director of the "Revue Belge de Philologie et d'Histoire". Together with Geert Lernout he was editor of "History and Violence in Anglo-Irish Literature". He was from 1987 co-editor of "Post-war Literatures in English. A Lexicon of contemporary Authors". Duytschaever was also editor of the literary magazine . 