@article{10_4153_CMB_2017_020_7,
     author = {Kalaj, David and Vujadinovic, Djordjije},
     title = {The {Gradient} of a {Solution} of the {Poisson} {Equation} in the {Unit} {Ball} and {Related} {Operators}},
     journal = {Canadian mathematical bulletin},
     pages = {536--545},
     year = {2017},
     volume = {60},
     number = {3},
     doi = {10.4153/CMB-2017-020-7},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-2017-020-7/}
}