@article{MS2_1954__2_165538,
     author = {W. FENCHEL},
     title = {K. {YANO} and {S.} {BOCHNER:} {Curvature} and {Betti} numbers},
     journal = {Mathematica Scandinavica},
     pages = {171--173},
     publisher = {mathdoc},
     volume = {2},
     year = {1954},
     url = {http://geodesic.mathdoc.fr/item/MS2_1954__2_165538/}
}