Ammonium hexadeca-oxo-heptavanadate microsquares: a new member in the family of the V7O16 mixed-valence nanostructures - Navas, Daniel; Donoso, José Pedro; Magon, Claudio José; Sotomayor-Torres, Clivia M.; Moreno, Mabel; Lozano, Harold; Benavente, Eglantina; Gonzalez, Guillermo (New Journal of Chemistry, 2019)