%0 Journal Article %A Wouter Castryck %A Filip Cools %T A combinatorial interpretation for Schreyer's tetragonal invariants %J Documenta mathematica %D 2015 %P 927-942 %V 20 %U http://geodesic.mathdoc.fr/articles/10.4171/dm/509/ %R 10.4171/dm/509 %F 10_4171_dm_509