@article{MZM_2002_72_1_a2,
     author = {O. V. Borodin and A. V. Kostochka and A. Raspaud and E. Sopena},
     title = {Estimating the {Minimal} {Number} of {Colors} in {Acyclic}  {-Strong} {Colorings} of {Maps} on {Surfaces}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {35--37},
     publisher = {mathdoc},
     volume = {72},
     number = {1},
     year = {2002},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2002_72_1_a2/}
}