@article{10_4064_ap_13_3_295_302,
     author = {M. Burnat},
     title = {Einige {Absch\"atzungen} der {Greenschen} {Funktion} des {Operators} $-\ensuremath{\Delta}u+q(x_1, x_2, x_3)u$},
     journal = {Annales Polonici Mathematici},
     pages = {295--302},
     publisher = {mathdoc},
     volume = {13},
     number = {3},
     year = {1963},
     doi = {10.4064/ap-13-3-295-302},
     language = {de},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-13-3-295-302/}
}