@article{JRAM_1991__421_153365,
     author = {A. Sharma and Rong-Qing Jia},
     title = {Solvability of some multivariate interpolation problems.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {73--82},
     year = {1991},
     volume = {421},
     zbl = {0735.41002},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1991__421_153365/}
}