Qualitative and Semiquantitative Determination of the Atomic and Molecular Tungsten Distributions in Hybrid Hydroxyurethanes–Poly(dimethylsiloxane) Films Containing Phosphotungstates ([PW12O40]3–) - Ysnaga, Orlando Elguera; Aguiar, Kelen Menezes Flores Rossi de; Zamboni, Cibele Bugno; Polito, Wagner Luiz; Rodrigues Filho, Ubirajara Pereira (Applied Spectroscopy, 2020)