1. Chmielewski, A., Gumiński, R., Radkowski, S., Szulim, P.: Aspekty wsparcia i rozwoju mikrokogeneracji rozproszonej na terenie Polski (Aspects of support and development of distributed microcogeneration in Poland), Rynek Energii 114(5), 94–101 (2014) (In Polish)
2. Directive 2012/27/EU of the European Parliment and of the Council of 25 October 2012 on energy efficiency, amending Directives 2009/125/EC and 2010/30/EU and repealing Directives 2004/8/EC and 2006/32/EC
3. Chmielewski, A., Gumiński, R., Radkowski, S., Szulim, P.: Experimental research and application possibilities of microcogeneration system with Stirling engine. J. Power Technol. 95 (Polish Energy Mix), 14–22 (2015)
4. Chmielewski, A., Lubikowski, K., Radkowski, S.: Simulation of energy storage work and analysis of cooperation between micro combined heat and power (mCHP) systems and energy storage. Rynek Energii 117(2), 126–133 (2015)
5. Chmielewski, A., Gumiński, R., Radkowski, S.: Chosen properties of a dynamic model of crankshaft assembly with three degrees of freedom. In: 20th International Conference on Methods and Models in Automation and Robotics (MMAR), IEEE, pp. 1038–1043 (2015), ISBN: 978-1-4799-8700