George Kosikov gained fame as a scholar and translator of French literature of the Middle Ages by a specialist, the Renaissance, the XIX-XX centuries, modernism and postmodernism. Among the poets and writers of France, which paid special attention Kosikov were Francois Villon, Michel de Montaigne, Rabelais, Theophile Gautier and Charles Baudelaire, Lautreamont, PolVerlen, Alfred Jarry, Boris Vian and others.
Also George Kosikov much studied the theory of literature and methodology of humanities, was the author of numerous works on the theoretical problems of the history of literature. Especially significant contribution he made to the study of these areas of human knowledge, like semiotics, structuralism and post-structuralism. Thanking the efforts of Russian reader can get acquainted with the works of such European thinkers and philosophers such as Roland Barthes, Jean-Paul Sartre, Julia Kristeva, Claude Bremond, Algirdas Julien Greimas, Tzvetan Todorov.
In 2006, the French government awarded the Order of George Kosikova officer Academic palm branches - insignia established by Napoleon in the field of science, education and awareness, with the wording "for his services to French culture."
Since 1996, George Kosikov was the head of the department of history of foreign literature of the Philological Faculty of Moscow State University named after Lomonosov. Until the last day, he read the students a lecture on the history of the literature of the Renaissance and the history of criticism.