@article{RRACEFN_1981_1981_1_a5,
     author = {Nielson, G. M. and  Mangeron, D. J.},
     title = {Bilinear interpolation in triangles based upon a {Mangeron} theorem.},
     journal = {Revista de la Real Academia de Ciencias Exactas, F{\'\i}sicas y Naturales},
     pages = {89-96},
     year = {1981},
     volume = {75},
     number = {1},
     language = {es},
     url = {http://geodesic.mathdoc.fr/item/RRACEFN_1981_1981_1_a5/}
}