Almeida, José C, András Wacha, Attila Bóta, László Almásy, Helena Vaz Fernandes, Fernanda M. A. Margaça, and Isabel M. Miranda Salvado. (August 18, 2015) 2015. “Pdms-Sio2 Hybrid Materials – A New Insight Into The Role Of Ti And Zr As Additives”. Polymer 72: 40-51. http://www.sciencedirect.com/science/article/pii/S0032386115300732.