@misc{ecological+and+economic+analysis+of+a+building+heating+system+thermomodernization+efficiency, author = {Pawłowska, Agata}, title = {Ecological and economic analysis of a building heating system thermomodernization efficiency}, journal = {Technical Transactions}, address = {Kraków}, publisher = {<a href=\"http://www.wydawnictwo.pk.edu.pl/\" target=\"_blank\">Wydawnictwo PK</a>}, date = {2014}, number = {Y. 111, iss. 5-B} }