• Production of fuel oil from Estonian oil shale : an indicator-based decomposition analysisGušča, Julija; Siirde, Andres; Eldermann, Meelis; Rohumaa, Priit27th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2014) : Turku, Finland, 15-19 June 2014. Vol. 22014 / p. 1226-1240