• Braesemann, Fabian, and Max Schuler. “Data Science vs Putin: How Much Does Each of Us Pay for Putin's War?,” 2022, 5. https://arxiv.org/pdf/2203.02756.pdf  . Analysis of how much each individual pays into Putin's war chest.

• Kahler, Alexander, Ludwig Möhring, Cordula Tutt, and Hermann-Josef Tenhagen. phoenix round: Gas and oil from Russia - can we still afford it?, 2022.  https://www.phoenix.de/sendungen/gespraeche/phoenix-runde/gas-und-el-aus-russia---koennen-wir-uns-das-noch-machen-a-2510208.html  Hermann-Josef Tenhagen from Finanztip explained, among other things, how we consumers can significantly reduce our consumption of gas and oil.

• Becker, V., Kleiminger, W., Coroamă, VC, & Mattern, F. (2018). Estimating the savings potential of occupancy-based heating strategies. Energy Informatics, 1(S1), 52.  https://doi.org/10.1186/s42162-018-0022-6 

• Generation zero watts. (nd). ACTION - Control the temperature of the rooms - Generation Zero Watt. Retrieved March 7, 2022, from  https://www.generationzerowatt.be/prof/de/toolbox/heizung/aktion-die-temperatur-der-raume-kontrolle/

•   Heating season: What private landlords should consider. (2021, September 14). objego.  https://objego.de/heating-period/  heizsparer.de . (nd-a). 

• The 20 best tips for saving heating costs.     heating saver. Retrieved March 7, 2022, from  https://www.heizsparer.de/spartipps/heizkosten/die-20-besten-tipps-zum-heizkosten-sparen 

• heizsparer.de. (nd-b). Save heating costs with programmable radiator thermostats.     heating saver. Retrieved March 7, 2022, from  https://www.heizsparer.de/spartipps/heizkosten/programmbare-thermostate-benefit    

• Homekit thermostat | Hardware | Forums | MacTechNews.de. (nd). Retrieved March 7, 2022, from  https://www.mactechnews.de/forum/discussion/Homekit-Thermostat-345514.html    

• Palmer J, Terry N, & Pope P (2012). How much energy could be saved by making small changes to everyday household behaviors?  https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/128720/6923-how-much-energy-could-be-saved-by-making-small-cha. pdf    

• Tabatabaei S, van der Ham W, CA Klein M, & Treur J (2017). A Data Analysis Technique to Estimate the Thermal Characteristics of a House. Energies, 10(9), 1358.  https://doi.org/10.3390/en10091358    

• Tommerup, H., Rose, J., & Svendsen, S. (2007). Energy-efficient houses built according to the energy performance requirements introduced in Denmark in 2006. Energy and Buildings, 39(10), 1123-1130.  https://doi.org/10.1016/j.enbuild.2006.12.011    

• Federal Environment Agency. (2008). Saving energy in the home.  https://web.archive.org/web/20120131041036/https://www.umweltdaten.de/publikationen/fpdf-l/188.pdf    

•   Federal Environment Agency. (2013). Saving energy in the home.  https://www.umweltbundesamt.de/sites/default/files/medien/381/publikationen/energiesparen-im- budget.pdf 

• Consumer Center. (nd). Save heating costs: set and change the thermostat correctly. Verbraucherzentrale.de. Retrieved March 7, 2022, from  https://www. Verbraucherzentrale.de/wissen/energie/heizungen-und-warmwasser/heizungkosten-sparen-thermostat-correct-einstellen-und-wechseln-7940    

• Warentest, S. (nd). Saving energy series, part 4: heating costs: reducing without freezing. Stiftung Warentest. Retrieved March 7, 2022, from  https://www.test.de/Serie-Energie-sparen-Teil-4-Heizkosten-REDUCING-without-freezing-1734645-0/    

• Wohnrechner Online GmbH. (nd). Utility Bill Template & Utilities Reduce—Now NEW 2022. Retrieved March 7, 2022, from  https://wohnrechner.online/nebenkostenabrechnung  

(Acknowledgments: Parts of the analyzes of  https://weact.campact.de/org/petitions/importstopp-von-russian-gas-now-no-financing-of-putin’s-war-machinery-more  ).