@article{RCM_1987__21_1_181792,
     author = {Gabriel Poveda Ramos},
     title = {La {Formula} {De} {Simpson} {Tridimensional.}},
     journal = {Revista colombiana de matematicas},
     pages = {213--230},
     publisher = {mathdoc},
     volume = {21},
     number = {1},
     year = {1987},
     language = {es},
     url = {http://geodesic.mathdoc.fr/item/RCM_1987__21_1_181792/}
}