@article{BUMI_1952_3_7_1_a1,
     author = {Fichera, Gaetano},
     title = {Sulla {``Kernel} function''.},
     journal = {Bollettino della Unione matematica italiana},
     pages = {4--15},
     publisher = {mathdoc},
     volume = {Ser. 3, 7},
     number = {1},
     year = {1952},
     zbl = {0047.31902},
     mrnumber = {49328},
     language = {it},
     url = {http://geodesic.mathdoc.fr/item/BUMI_1952_3_7_1_a1/}
}