[9] Vigants E., Prodanuks T., Vigants G., Veidenbergs I., Blumberga D. Modelling of Technological Solutions to 4th Generation DH Systems. Environmental and Climate Technologies 2017:20(1):5–23. https://doi.org/10.1515/rtuect-2017-000710.1515/rtuect-2017-0007
[10] Bolonina A., Bolonins G., Blumberga D. Analysis of the Impact of Decreasing District Heating Supply Temperature on Combined Heat and Power Plant Operation. Environmental and Climate Technologies 2015:14(1). https://doi.org/10.1515/rtuect-2014-001310.1515/rtuect-2014-0013
[13] Rebitzer G., Ekvall T., Frischknech R., Hunkeler D., Norris G., Rydberg T., Schmidt W., Suh S., Weidema B., Pennington D. Life cycle assessment Part 1: Framework, goal and scope definition, inventory analysis, and applications. Environment International 2004:30(5):701–720. https://doi.org/10.1016/j.envint.2003.11.00510.1016/j.envint.2003.11.00515051246
[15] Bartolozzi I., Rizzi F., Frey M. Are district heating systems and renewable energy sources always an environmental win-win solution? A life cycle assessment case study in Tuscany, Italy. Renewable and Sustainable Energy Reviews 2017:80:408–420. https://doi.org/10.1016/j.rser.2017.05.23110.1016/j.rser.2017.05.231
[16] Jolliet O., Charles M. M. R., Humbert S., Payet J., Rebitzer G., Rosenbaum R. IMPACT 2002+: A New Life Cycle Impact Assessment Methodology. International Journal on LCA 2003:8(6):324–330. https://doi.org/10.1007/BF0297850510.1007/BF02978505
[19] Bartolozzia I., Rizzib F., Frey B. Are district heating systems and renewable energy sources always an environmental win-win solution? A life cycle assessment case study in Tuscany, Italy. Renewable and Sustainable Energy Reviews 2017:80:408–420. https://doi.org/10.1016/j.rser.2017.05.23110.1016/j.rser.2017.05.231
[25] Angelis E. De, Dotelli G., Pittau F., Torre A. La, Porcino C., Pansa G., Villa N. LCA and LCC based Energy Optimization of Building Renovation Strategies. In SB13 GRAZ Sustainable Building Conference 2013, Graz, 2013.
[26] Bull J., Gupta A., Mumovic D., K. J. Life cycle cost and carbon footprint of energy efficient refurbishments to 20th century UK school buildings. International Journal of Sustainable Built Environment 2014:3(1):1–17. https://doi.org/10.1016/j.ijsbe.2014.07.00210.1016/j.ijsbe.2014.07.002