%0 Journal Article %A Bernhard Keller %A Amnon Neeman %T The connection between May's axioms for a triangulated tensor product and Happel's description of the derived category of the quiver $D_4$ %J Documenta mathematica %D 2002 %P 535-560 %V 7 %U http://geodesic.mathdoc.fr/articles/10.4171/dm/131/ %R 10.4171/dm/131 %F 10_4171_dm_131