1. Seppälä J, Mäenpää I, Koskela S, Mattila T, Nissinen A, Katajajuuri J-M, Härmä T, Korhonen M-R, Saarinen M, Virtanen Y (2009) Environmental impacts of material flows caused by the Finnish economy. Suomen ympäristökeskus (SYKE)
2. Katajajuuri J-M, Virtanen Y (2007) Environmental Impacts of Product Packaging in Finnish Food Production Chains. 5th International Conference LCA In Foods, Gothenburg, Sweden
3. Solomon S, Qin D, Manning M, Alley RB, Berntsen T, Bindoff NL, Chen Z, Chidthaisong A, Gregory JM, Hegerl GC, Heimann M, Hewitson B, Hoskins BJ, Joos F, Jouzel J, Kattsov V, Lohmann U, Matsuno T, Molina M, Nicholls N, Overpeck J, Raga G, Ramaswamy V, Ren J, Rusticucci M, Somerville R, Stocker TF, Whetton P, Wood RA, Wratt D (2007) Climate Change 2007: The Physical Science Basis. Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change. Cambridge University Press, Cambridge
4. Seppälä J, Knuuttila S. Silvo K (2004) Eutrophication of aquatic ecosystems. A new method for calculating the potential contributions of nitrogen and phosphorus. Int J Life Cycle Assess 9(2):90–100.
5. Seppälä J, Posch M, Johansson M, Hettelingh J-P (2006) Countrydependent characterisation factors for acidification and terrestrial eutrophication based on accumulated exceedence as an impact category indicator. Int J Life Cycle Assess 11(6):403–416.