I have been searching for this paper for days, unfortunately I cannot find it.
Does any of you know how to find it?
Hirschowitz A. Problèmes de Brill–Noether en rang supérieur, C. R. Acad. Sci. Paris Sér. I Math. 307 (1988), 153–156
Thank you a lot :D
The paper is available at https://gallica.bnf.fr/ark:/12148/bpt6k54949409/f19.image