@article{DOCMA_2005__10__a9,
     author = {Dugger, Daniel and Isaksen, Daniel C.},
     title = {Algebraic $K$-theory and sums-of-squares formulas},
     journal = {Documenta mathematica},
     pages = {357--366},
     publisher = {mathdoc},
     volume = {10},
     year = {2005},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DOCMA_2005__10__a9/}
}