Cunha, M. A. A. da; Silva, S. S. da; Carvalho, W. de; Santos, J. C. dos. Use of PVA-Gel Immobilized Cells: A New Strategy for Biotechnological Production of Xylitol from Sugarcane Bagasse Hidrolysate. Semina: Ciênc. Agrár. 2005, 26, 61-70.