@article{IM_1976__35_142411,
     author = {Michel Demazure},
     title = {A {Moebius-Like} {Formula} in the {Schubert} {Calcalus.}},
     journal = {Inventiones mathematicae},
     pages = {317--320},
     publisher = {mathdoc},
     volume = {35},
     year = {1976},
     zbl = {0353.20032},
     url = {http://geodesic.mathdoc.fr/item/IM_1976__35_142411/}
}