“…In the case of intermediate city systems, the work of Hidalgo, de Mattos and Arenas (2009) brings together research on the systems of San Felipe-Los Andes (Arenas, Hidalgo & Aliaga, 2009), Quillota-La Calera (Negrete & Hidalgo, 2009) and Rancagua-Machalí (Arenas, Hidalgo & Aliaga, 2009), but these are left at a regional analysis level, without going into depth about the morphological patterns of the Metropolitan setup. From a functional analysis, Napadensky & Orellana (2019) have explored the cases of Greater La Serena, Greater Concepción, and Greater Puerto Montt, finding divergent trends with large Latin-American cities. All in all, many authors concur that the research in this field is incipient and that the models which explain the phenomena are exploratory in nature (Garín, Salvo & Bravo, 2009;Henríquez, 2014).…”