@article{JOLT_2013_23_3_a14,
     author = {Toshihisa Kubo},
     title = {On the {Homomorphisms} between the {Generalized} {Verma} {Modules} {Arising} from {Conformally} {Invariant} {Systems}},
     journal = {Journal of Lie Theory},
     pages = {847--883},
     year = {2013},
     volume = {23},
     number = {3},
     url = {http://geodesic.mathdoc.fr/item/JOLT_2013_23_3_a14/}
}