Using the genetic algorithm for environmental optimization of 3-span reinforced concrete beam / Anna Halicka, Henryk CIUREJ, Magdalena GICALA // W: Concrete - innovations in materials, design and structures : \emph{fib} symposium 2019 : Kraków, Poland 27–29 May 2019 : book of abstracts / eds. W. Derkowski, [et al.]. — [Polska] : Fédération Internationale du Béton (\emph{fib}) - International Federation for Structural Concrete, cop. 2019. — (fib Symposium Proceedings ; ISSN 2617-4820). — ISBN: 978-2-940643-01-1. — S. 611-612. — Bibliogr. s. 612. — Pełny tekst w: Proceedings of the fib Symposium 2019 : Concrete - innovations in materials, design and structures : Krakow, Poland, 27 May 2019–29 May 2019 / eds. Wit Derkowski [et al.]. - [Switzerland] : International Federation for Structural Concrete, [2019]. — S. 2175-2182. — Bibliogr. s. 2182. — ISBN 978-294064300-4