@misc{the+influence+of+stoppages+on+productivity+during+construction+of+water+supply+and+sewage+systems,
    author = {Rybka, Iwona i Bondar-Nowakowska, Elżbieta i Połoński, Mieczysław},
    title = {The influence of stoppages on productivity during construction of water supply and sewage systems},
    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. 2-B}
}