Fast, low-cost preparation of hackmanite minerals with reversible photochromic behavior using a microwave-assisted structure-conversion method - Carvalho, José Miranda de; Norrbo, Isabella; Ando, Rômulo Augusto; Brito, Hermi Felinto de; Fantini, Márcia Carvalho de Abreu; Lastusaari, Mika (Chemical Communication, 2018)