@article{RM_1986_41_1_a8,
     author = {D. A. De Spiller},
     title = {On~the central projections of the faces of a simplex with centres of projection at its vertices},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {225--226},
     publisher = {mathdoc},
     volume = {41},
     number = {1},
     year = {1986},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1986_41_1_a8/}
}