• An investigation of turbulence generation and wall shear stress spectral analysis during unsteady flow in tubesAinola, Leo; Koppel, Tiit; Liiv, UnoXVIII IAHR Congress : Cagliari, Italia, 10 - 14 Sept. 1979 : 3, Proceedings, Subject B : Mass and heat exchange in hydraulic phenomena1979 / p. 165-172