1. Agrawal, S., 1971. Horizontal two phase stratified flow in pipe, M.Sc. Thesis, University of Calgary
2. Concurrent liquid–gas flow in a pipe-line contactor;Alves;Chem. Eng. Prog.,1954
3. Andritsos, N., 1986. Effect of pipe diameter and liquid viscosity on horizontal stratified flow, Ph.D. Dissertation, University of Illinois at Champaign-Urbana
4. A Comprehensive Mechanistic Model for Upward Two-Phase Flow in Wellbores;Ansari;SPE Prod. Facilities J.,1994
5. Some observation on the motion of elongated bubbles in horizontal pipes;Aziz;Can. J. Chem. Eng.,1974