@article{10_4007_annals_2010_172_1949,
     author = {Jens Marklof and Andreas Str\"ombergsson },
     title = {The distribution of free path lengths  in the periodic {Lorentz} gas and  related lattice point problems},
     journal = {Annals of mathematics},
     pages = {1949--2033},
     publisher = {mathdoc},
     volume = {172},
     number = {3},
     year = {2010},
     doi = {10.4007/annals.2010.172.1949},
     mrnumber = {2726104},
     zbl = {1211.82011},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4007/annals.2010.172.1949/}
}