Preparation of carbon aerogels from 5-methylresorcinol-formaldehyde gelsPerez-Caballero, Fernando; Peikolainen, Anna-Liisa; Uibu, Mai; Kuusik, Rein, keemik; Volobujeva, Olga; Koel, MihkelMicroporous and mesoporous materials2008 / p. 230-236 : ill