@article{10_4064_ap83_1_8,
     author = {Abdoul Ifra and Lotfi Riahi},
     title = {On the equivalence of {Green} functions
 for general {Schr\"odinger} operators on a half-space},
     journal = {Annales Polonici Mathematici},
     pages = {65--76},
     publisher = {mathdoc},
     volume = {83},
     number = {1},
     year = {2004},
     doi = {10.4064/ap83-1-8},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap83-1-8/}
}