Les tiens, les miens et les nôtres : la paternité des œuvres de J.-H. Rosny

J.-H. Rosny brothers started their literary production in 1887, seeking recognition in the French literary world at the end of XIX century. In 1935, almost thirty years after their separation, they signed an agreement to assign individual authorship to some of their coau-thored works. Our study aims to verify if that distribution has been observed in later editions of those works in France and Spain, and to compare the personal work of the brothers during their collaboration. For this purpose, we have consulted the catalogues of the national libraries of both countries.