@article{CMH_1982__57_139911,
     author = {Allen Back},
     title = {Pontryagin forms on homogeneous spaces.},
     journal = {Commentarii mathematici Helvetici},
     pages = {349--355},
     publisher = {mathdoc},
     volume = {57},
     year = {1982},
     zbl = {0591.57017},
     url = {http://geodesic.mathdoc.fr/item/CMH_1982__57_139911/}
}