@article{10_4171_dm_221,
     author = {Marc Levine},
     title = {Motivic tubular neighborhoods},
     journal = {Documenta mathematica},
     pages = {71--146},
     year = {2007},
     volume = {12},
     doi = {10.4171/dm/221},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/dm/221/}
}