@misc{Kałuża_Andrzej_Energy-efficiency,
 author={Kałuża, Andrzej},
 copyright={Gdańsk University of Technology Library},
 howpublished={online},
 publisher={Polskie Towarzystwo Elektrotechniki Teoretycznej i Stosowanej},
 language={eng},
 type={digital document},
 title={Energy-efficiency investment of tram companies can be profitable. Concretization of energy-efficiency analysis. Fixed charge for tram company services, contract terms and public good character of the tram service utility justifying subsidies},
 keywords={conference proceedings, conferences, efficiency, energy, tram transport, urban transport},
}