@article{MM2_1980__33_154755,
     author = {Harold Donnelly},
     title = {The {Differential} {Form} {Spectrum} of {Hyperbolic} {Space.}},
     journal = {Manuscripta mathematica},
     pages = {365--386},
     publisher = {mathdoc},
     volume = {33},
     year = {1980},
     zbl = {0464.58020},
     url = {http://geodesic.mathdoc.fr/item/MM2_1980__33_154755/}
}