1. Air conditioning of railway rolling stock - Energy efficiency and environment friendlyness [Article @Klimatisierung von Schienenfahrzeugen-Energieeffizienz und Umweltfreundlichkeit];Berlitz;ZEV Rail,2013
2. White Paper on transport – roadmap to a single European transport area – Towards a competitive resource-efficient transport system,2011
3. Comparison of yearly energy demand of rail HVAC systems with refrigerants air and R134a [Article @Vergleich des Jahresenergiebedarfs von Bahn-HLK-Systemen mit den Kältemitteln Luft und R134a];Luger;ZEV Rail,2018
4. Regulation (EU) No 517/2014 of the European Parliament and of the Council of 16 April 2014 on fluorinated greenhouse gases and repealing Regulation (EC) No 842/2006 Text with EEA relevance;Official J. Eur. Union,2014
5. Railway applications; Air conditioning for main line rolling stock, Comfort parameters and type tests; German version EN 13129:2016, 2016.