1. Random Data: Analysis and Measurement Procedures;Bendat,1971
2. Experimental investigation of certain aspects of upward vertical bubble and slug flows;Bilicki;Exp. Fluids,1988
3. Existence and properties of flow structure waves in two-phase bubbly flow;Bouré,1982
4. Bouré, J.A., 1988. Properties of kinematic waves in two-phase pipe flow consequences on the modelling strategy. European Two-Phase Flow Group Meeting, Brussels, 30 May–1st June
5. A study of the bubble-to-slug transition in vertical gas–liquid flow in columns of different diameter;Cheng;Int. J. Multiphase Flow,1998