Trujillo S., Bonilla C. E. P., Santos M. S., Matos J. M., Gamboa T., Perilla J. E., Mano J. F., and Ribelles J. L. G.,  "Polycaprolactone membranes reinforced by toughened sol-gel produced silica networks",  Journal of Sol-Gel Science and Technology, vol. 71, issue 1, pp. 136-146, doi:10.1007/s10971-014-3342-4, 2014.