@article{DAN_1988_299_1_a0,
     author = {A. A. Agrachev and R. V. Gamkrelidze},
     title = {Calculation of the {Euler} characteristic of the intersections of},
     journal = {Doklady Akademii Nauk},
     pages = {11--14},
     publisher = {mathdoc},
     volume = {299},
     number = {1},
     year = {1988},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1988_299_1_a0/}
}