@article{ELMA_1976__31_141172,
     author = {Richard S. Ellis},
     title = {Volume of an {N-Simplex} by  multiple {Integration.}},
     journal = {Elemente der Mathematik},
     pages = {57--59},
     publisher = {mathdoc},
     volume = {31},
     year = {1976},
     zbl = {0324.26008},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1976__31_141172/}
}