@article{10_4153_CMB_2014_045_6,
     author = {Sebag, Julien},
     title = {Homological {Planes} in the {Grothendieck} {Ring} of {Varieties}},
     journal = {Canadian mathematical bulletin},
     pages = {356--362},
     year = {2015},
     volume = {58},
     number = {2},
     doi = {10.4153/CMB-2014-045-6},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-2014-045-6/}
}