Detalle del Autor

Spies, Ruben Daniel, <pre><span>Instituto</span> <span>de</span> <span>Matemá</span><span>tica</span> <span>Aplicada</span> <span>del</span> <span>Litoral</span> <span>IMAL</span>,</pre><pre> <span>CONICET</span>-<span>UNL</span>, <span>Predio</span> <span>CCT</span>-<span>C, Argentina