%0 Journal Article %T Maximal exact structures on additive categories revisited %A Septimiu Crivei %J Mathematics %D 2011 %I arXiv %X Sieg and Wegner showed that the stable exact sequences define a maximal exact structure (in the sense of Quillen) in any pre-abelian category. We generalize this result for weakly idempotent complete additive categories. %U http://arxiv.org/abs/1106.1606v1