@article{CRMATH_2016__354_9_936_0,
     author = {Martin, Nicolas},
     title = {The class of the affine line is a zero divisor in the {Grothendieck} ring: {An} improvement},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {936--939},
     publisher = {Elsevier},
     volume = {354},
     number = {9},
     year = {2016},
     doi = {10.1016/j.crma.2016.05.016},
     language = {en},
     url = {http://www.numdam.org/articles/10.1016/j.crma.2016.05.016/}
}