@article{CMH_1975__50_139620,
     author = {James L. Heitsch},
     title = {A cohomology for foliated manifolds.},
     journal = {Commentarii mathematici Helvetici},
     pages = {197--218},
     year = {1975},
     volume = {50},
     zbl = {0311.57014},
     url = {http://geodesic.mathdoc.fr/item/CMH_1975__50_139620/}
}