@article{10_4171_dm_338,
     author = {Daniel R. Grayson},
     title = {The additivity theorem in algebraic $K$-theory},
     journal = {Documenta mathematica},
     pages = {457--464},
     year = {2011},
     volume = {16},
     doi = {10.4171/dm/338},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/dm/338/}
}