@article{IM2_1986_27_3_a5,
     author = {P. A. Kuchment},
     title = {Spherical representation of solutions of invariant differential equations on {a~Riemannian} symmetric space of noncompact type},
     journal = {Izvestiya. Mathematics},
     pages = {535--548},
     year = {1986},
     volume = {27},
     number = {3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1986_27_3_a5/}
}