@article{SM_2005_196_1_a4,
     author = {A. M. Raigorodskii},
     title = {The {Erd\H{o}s{\textendash}Hadwiger} problem and the chromatic numbers of finite geometric graphs},
     journal = {Sbornik. Mathematics},
     pages = {115--146},
     year = {2005},
     volume = {196},
     number = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2005_196_1_a4/}
}