I agree with you that conscience of intertextuality and the exercise of self-reflexivity are two of the main contributions of literary modernity. And both have in Lautréamont one of their most radical proponents. The preclarity of Lautréamont is so great that, with a provocative sense, he says in Poesías: "Plagiarism is necessary. It is implicit in progress".
Thanks for your right comment, @nancybriti. Greetings.