@misc{Peszyński_Kazimierz_Development, author={Peszyński, Kazimierz and Olszewski, Łukasz and Smyk, Emil and Kasprowicz, Tomasz}, howpublished={online}, language={eng}, type={materiały konferencyjne}, title={Development of new type ventilation ducts system}, keywords={kanały wentylacyjne, line resistance coefficient, minor (local) losses coefficien, rounded rectangular cross-sectional area, ventilation}, }