1. Ageing of Liquid Impregnated Cellulose for Power Transformers; CIGRE Task Force D1.53; CIGRE Brochure; CIGRE: Paris, France, 2018; No. 738; Available online: https://e-cigre.org/publication/738-ageing-of-liquidimpregnated-cellulose-for-power-transformers;
2. Ageing of cellulose in mineral-oil insulated transformers, Task Force, D1.01.10., CIGRE Brochure; CIGRE Paris, France, 2007, https://ecigre.org/publication/323-ageing-of-cellulose-in-mineral-oil-insulatedtransformers;
3. B. Pejić, "Uticaj različitih faktora fizičko-hemijskog modifikovanja na strukturu i svojstva vlakana konoplje", doktorska disertacija, TMF Beograd, 2009. http://dx.doi.org/10.2298/bg20090911pejic;
4. H.P. Moser, Transformerboard, Scientia electrica, 1979;
5. Y. Wang, M. Li, "Fast Fraction of Technical Lignins by Organic Cosolvents", ACS Sustainable Chemistry & Engineering, 2018, ch 6, pp. 6064-6072 https://doi.org/10.1021/acssuschemeng.7b04546;