@article{10_4171_dm_14,
     author = {Frans Keune},
     title = {Multirelative $K$-theory and axioms for the $K$-theory of rings},
     journal = {Documenta mathematica},
     pages = {277--291},
     year = {1996},
     volume = {1},
     doi = {10.4171/dm/14},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/dm/14/}
}