* Historical Dictionary of French Literature, John Flower, pág 255, Scarecrow Press, 2013 http://books.google.es/books?id=Kd6tAAAAQBAJ&pg=PA255&lpg=PA255&dq=roger+ikor&source=bl&ots=bfBxzBZ_t6&sig=EzBSAsAwi6XTgnFdWqp0uwAIus0&hl=es&sa=X&ei=gWsVVP6YLvSg7AaXt4GABQ&ved=0CDwQ6AEwBDgU#v=onepage&q=roger%20ikor&f=false Historical Dictionary of French Literature, John Flower, pág 255, Scarecrow Press, 2013