Open Science Research Excellence
Andra Blumberga and  Armands Gravelsins and  Haralds Vigants and  Dagnija Blumberga ,  Biotechonomy System Dynamics Modelling: Sustainability of Pellet Production.   journal   = {International Journal of Energy and Power Engineering}, [online]. World Academy of Science, Engineering and Technology. April 2017, vol. 124(4). 377 - 381[viewed 15 July 2020]. Available from: http://waset.org/publications/10006689.