@article{10_4064_cm88_1_9,
     author = {Roman Urban},
     title = {Noncoercive differential operators
on homogeneous manifolds of negative curvature
and their {Green} functions},
     journal = {Colloquium Mathematicum},
     pages = {121--134},
     publisher = {mathdoc},
     volume = {88},
     number = {1},
     year = {2001},
     doi = {10.4064/cm88-1-9},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm88-1-9/}
}