@article{10_4171_dm_566,
     author = {Richard Crew},
     title = {Rigidity and {Frobenius} {Structure}},
     journal = {Documenta mathematica},
     pages = {287--296},
     year = {2017},
     volume = {22},
     doi = {10.4171/dm/566},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/dm/566/}
}