Flaga, A. 2019. Ratios of forces and forces moments as dynamic similarity criteria of various phenomena occurring in wind engineering, snow engineering and fluid dynamics: Part II – Unsteady problems of periodic, quasi-periodic and turbulent character. Budownictwo i Architektura. 17, 4 (Feb. 2019), 141–154. DOI:https://doi.org/10.24358/Bud-Arch_18_174_12.