1. Soviet housing: who built what and when?.;Gentile;The case of Daugavpils, Lavia, Journal of Historical Geography.,2010
2. The Buildings Performance Institute Europe. Data hub for the Energy Performance of the buildings. Available from http://www.buildingsdata.eu/data-hub-web-page. Accessed 12.09.14.
3. Legal and Economic Problems of Housing Management in Latvia. Proceedings of the 52nd International Scientific Conference of Riga Technical University: RTU FEEM Scientific Conference on Economics and Entrepreneurship (SCEE’2011), Riga;Slava;Latvia, 7-7 October,2011
4. An international survey of the energy service company (ESCO) industry;Vine;Energy Policy,2005