Gerard de Vries's writings on Nabokov have appeared in "Russian Literature Triquarterly," "Nabokov Studies," "Revue de Litterature Comparee," and "The Nabokovian." Donald Barton Johnson is professor emeritus of Russian at the University of California, Santa Barbara. He is the author of "Worlds in Regression: Some Novels of Vladimir Nabokov." Liana Ashenden is a researcher who studies Bosch.