Šliogerienė, J.; Kaklauskas, A.; Zavadskas, E. K.; Bivainis, J.; Seniut, M. Environment Factors of Energy Companies and Their Effect on Value: Analysis Model and Applied Method. TEDE 2009, 15 (3), 490-521. https://doi.org/10.3846/1392-8619.2009.15.490-521.