@misc{ecological+wall+systems+as+an+element+of+sustainable+development+cost+issues,
    author = {Wojciech Drozd i Leśniak, Agnieszka},
    title = {Ecological Wall Systems as an Element of Sustainable Development - Cost Issues},
    journal = {SUSTAINABILITY},
    address = {Basel, Switzerland},
    publisher = {MDPI AG},
    date = {2018},
    number = {10(7):2234},
    ISSN = {2071-1050}
}