Some monogeneity conditions relative to the Second Derivative of a Polygenic Function with respect to a Polygenic Function

DeCicco, John; Walvekar, Arun. «Some monogeneity conditions relative to the Second Derivative of a Polygenic Function with respect to a Polygenic Function». Collectanea Mathematica, 1969, vol.VOL 20, núm. 3, p. 199-06, http://raco.cat/index.php/CollectaneaMathematica/article/view/57711.