Development of Chitosan Microspheres through a Green Dual Crosslinking Strategy Based on Tripolyphosphate and Vanillin oleh Rodolpho Fagundes Correa, Giovana Colucci, Noureddine Halla, João Alves Pinto, Arantzazu Santamaria-Echart, Silvia Priscila Blanco, Isabel Patrícia Fernandes, Maria Filomena Barreiro