@article{10_4171_dm_507,
     author = {Clark Barwick},
     title = {Multiplicative structures on algebraic $K$-theory},
     journal = {Documenta mathematica},
     pages = {859--878},
     year = {2015},
     volume = {20},
     doi = {10.4171/dm/507},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/dm/507/}
}