@article{CMH_1946__19_138887,
     author = {Georges de de Rham and Pierre Bidal},
     title = {Les formes diff\'erentielles harmoniques.},
     journal = {Commentarii mathematici Helvetici},
     pages = {1--49},
     publisher = {mathdoc},
     volume = {19},
     year = {1946},
     zbl = {0063.00378},
     url = {http://geodesic.mathdoc.fr/item/CMH_1946__19_138887/}
}