@article{10_4171_dm_332,
     author = {Richard Pink and Torsten Wedhorn and Paul Ziegler},
     title = {Algebraic zip data},
     journal = {Documenta mathematica},
     pages = {253--300},
     year = {2011},
     volume = {16},
     doi = {10.4171/dm/332},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/dm/332/}
}