@misc{AUCMP_1999__40_2_a3,
     title = {[Lectures presented at {Winter} school] {Section} of topology},
     journal = {Acta Universitatis Carolinae. Mathematica et Physica},
     pages = {24--25},
     publisher = {mathdoc},
     volume = {40},
     number = {2},
     year = {1999},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AUCMP_1999__40_2_a3/}
}