@article{AMBP_2018__25_2_207_0,
     author = {Ash, Avner and Doud, Darrin},
     title = {Reducible {Galois} representations and arithmetic homology for $\protect \mathrm{GL}(4)$},
     journal = {Annales math\'ematiques Blaise Pascal},
     pages = {207--246},
     publisher = {Universit\'e Clermont Auvergne, Laboratoire de math\'ematiques Blaise Pascal},
     volume = {25},
     number = {2},
     year = {2018},
     doi = {10.5802/ambp.375},
     language = {en},
     url = {http://www.numdam.org/articles/10.5802/ambp.375/}
}