Wohlgemuth, S. A., White, R. J., Willinger, M. G., Titirici, M. M., & Antonietti, M. (2012). A one-pot hydrothermal synthesis of sulfur and nitrogen doped carbon aerogels with enhanced electrocatalytic activity in the oxygen reduction reaction. Green Chemistry, 14(5), 1515-1523. doi:10.1039/c2gc35309a.