Measures to tackle climate change in the Walloon region

PTAK, Michał. Measures to tackle climate change in the Walloon region. In Hradec Economic Days 2012. 1st ed. 256 s. ISBN 978-80-7435-172-3 (brož.) Hradecké ekonomické dny 2012. Hradec Králové : Gaudeamus, 2012, s. 177-181.