1. Biofuel user manual;Vares;TutPress,2005
2. Biomass combustion science, technology and engineering;Rosendahl;Woodhead Publishing, Netherland,2013
3. European council – conclusion, Brussels, Belgium (2014), https://www.consilium.europa.eu/media/24561/145397.pdf.
4. Application concepts of shaped and unshaped refractories for combustion plants;Klinger;Proc. UNITECR,2007
5. V. Antonovič, Refractory materials for biofuel boilers: Chapter 22/V. Antonovič, J. Szczerba, J. Kerienė, R. Stonys, R. Boris//Frontiers in bioenergy and biofuels, InTech, Rijeka, Croatia 2017, 443–464.