@article{10_4171_dm_420,
     author = {Bjorn Poonen},
     title = {Extending self-maps to projective space over finite fields},
     journal = {Documenta mathematica},
     pages = {1039--1044},
     year = {2013},
     volume = {18},
     doi = {10.4171/dm/420},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/dm/420/}
}