Legal basis for administrative requirements at the national level

Law 24.747 onAgenda initiative (1996-11-27) [Ley 24.747 Iniciativa legislativa popular]

http://www.mininterior.gov.ar/asuntos_politicos_y_alectorales/dinap/dinap_archivos/INICIATIVALEGISLATIVAPOPULAR-Ley24.747.pdf

Law 25.432 onReferendum (2001-05-23) [Ley 25.432 Consulta popular vinculante y novinculante]

http://infoleg.mecon.gov.ar/infolegInternet/anexos/65000-69999/67518/norma.htm